12 Best B2B Translation Services: Expert Picks for 2025

Business expansion across global markets requires accurate, culturally relevant communication that resonates with diverse audiences. As companies scale internationally, the need for specialized business translation services has never been more critical. The global language services market reached USD 75.5 billion in 2024 and is expected to reach USD 111.3 billion by 2033, highlighting the massive opportunity for companies that get their international communication strategy right.

We’ve evaluated 12 leading business translation services based on their industry expertise, technology integration, compliance standards, and customer support capabilities. This comprehensive analysis provides you with the insights needed to choose the right translation partner for your business expansion goals. Our evaluation focuses on providers that understand the unique challenges of business communications, from technical documentation to marketing materials and customer support content.

Why does business need specialized translation

Global business success hinges on clear, culturally relevant communication that builds trust with local audiences. Businesses face unique translation challenges, including maintaining brand consistency across markets, ensuring regulatory compliance in different jurisdictions, and adapting technical terminology for local markets. According to recent research, 72.4% of consumers are more likely to buy a product with information in their own language (Language Services Market Size Share, Trends Report, 2033). Professional business translation services address these challenges by combining industry expertise with cultural understanding, ensuring your message resonates authentically while maintaining technical accuracy and brand voice across all markets.

Our picks for the 12 best B2B translation services

Company Name	Years Operating	Number of Languages Served	Price	Compliance & Security	Integrations	Customer Support
Milengo	30+ years (founded 1991)	120+ languages	USD 0.021 to 0.206 per word	ISO 17100, ISO 18587, ISO 5060 certified; GDPR-compliant	50+ CMS/TMS integrations; LanguageDesk portal	Dedicated teams, global time zones, <1 day quotes
TransPerfect	30+ years (since 1992)	170+ languages	No public rates; subscription pricing	ISO 9001, 17100, 18587; HITRUST, GxP & GDPR compliant	CMS connectors, APIs and data services	24/7 global support; 100+ offices worldwide
Lionbridge	~25 years (since 1996)	70+ languages	From $0.05/word for some services	ISO 9001, 27001, 27701, 27017; GDPR-compliant	Language Cloud + connectors; API for apps	Global coverage; 24/5/365 service desks
RWS Group	40+ years (since 1982)	250+ language pairs	Quote-based service pricing	ISO 9001, 17100, 27001; FDA 21 CFR 11	Trados and MT integration; localization tech suite	Global support; 30+ sites worldwide
Welocalize	25+ years (since 1997)	300+ languages	Quote-based pricing	Seven ISO certifications including 13485, 14001	OPAL API; CMS/authoring connectors	24/7 program managers; dedicated teams
LanguageWire	25 years (founded 1999)	175+ languages	Quote-based pricing	ISO 27001, 17100, 9001, 18587; TISAX	Native CMS connectors; TMS & MT tools	Enterprise support; data security focus
Acclaro	23 years (since 2002)	125+ languages	Plugin at $999 + $399/year	ISO 27001, 17100, 18587	MyAcclaro API; CMS/tech integrations	US-based; dedicated client success managers
MasterWord	30+ years (since 1993)	250+ languages	Project-based pricing	ISO 9001, 17100, 13611	MyMasterWord portals; custom workflows	24/7 phone interpreting; on-site support
Language Scientific	24+ years	215+ languages	Transparent cost structure	ISO 9001, 17100, 27001 (2024)	ASKnetwork™; eTMF integration	US HQ; specialized project managers
TOPPAN Digital Language	Decades (global brand)	Dozens of languages	Quote-based pricing	ISO 9001, 17100, 13485; HITRUST CSF	STREAM AI platform; CMS connectors	24/7 support; global offices
Propio	30+ years	200+ languages	Per minute/hour interpreting rates	HIPAA, FERPA, GLBA; ISO 9001	Propio ONE platform; scheduling tools	24/7 interpreter access; analytics
Unbabel	~10 years (since 2013)	90+ languages	Per-word and tiered pricing models	ISO 27001, 9001; GDPR & CCPA compliant	Deep platform integrations (Salesforce, Zendesk)	Platform support; self-service portal

Milengo

Milengo brings over 30 years of localization expertise to business translation, combining advanced AI-powered workflows with human post-editing to deliver enterprise-grade results. Their highly automated service leverages 100+ best-in-class translation technologies, cutting translation costs by up to 80% while maintaining quality through multilingual terminology management for consistent brand communication. The platform supports 120+ languages with ISO 17100, ISO 18587, and ISO 5060 certifications, ensuring enterprise-level security through GDPR-compliant workflows, secure client portals, and strict confidentiality protocols. Milengo’s LanguageDesk client portal integrates with 50+ CMS and TMS platforms, including Adobe Experience Manager, WordPress, Sitecore, Salesforce, and HubSpot, making it ideal for businesses with continuous content pipelines.

Why It’s Good for Business Translations: Milengo delivers enterprise-grade translation combining advanced AI with human post-editing, providing brand and terminology control to ensure consistency across markets. Their complete end-to-end solution serves businesses with continuous content pipelines through strong CMS integrations, APIs, and scalable workflows.

Compliance & Security: ISO 17100, ISO 18587, and ISO 5060 certified with GDPR-compliant workflows, secure client portal access, NDAs for all linguists, and strict quality assurance protocols for enterprise data protection.

Integrations: Offers 50+ CMS and TMS integrations, including Adobe Experience Manager, WordPress, Sitecore, Salesforce, and HubSpot, with best-in-class AI language technologies and automated content upload through LanguageDesk.

Customer Support: Provides dedicated client teams with support across major global time zones (EU/US/Asia), expert localization strategy consulting, self-service options via LanguageDesk, fast quote responses (under 1 day), and comprehensive client onboarding support.

Pros & Cons:

Pros	Cons
Decades of B2B localization experience	Not suited for low-volume translations
ISO-certified for quality and security
Industry-specific linguists and tech integrations
AI-powered translation with customized prompts
Self-service client portal (LanguageDesk)

TransPerfect

TransPerfect operates as the world’s largest language service provider with over 30 years of experience since 1992, serving 170+ languages through their comprehensive GlobalLink TMS and AI products. Their end-to-end services span translation, AI solutions, and interpreting, backed by a massive global infrastructure with 100+ offices worldwide providing 24/7 support. The company maintains rigorous compliance standards, including ISO 9001, ISO 17100, and ISO 18587 certifications, plus HITRUST, GxP, and GDPR compliance for regulated industries. TransPerfect integrates with various CMS platforms through GlobalLink connectors, APIs, and data services, making them suitable for large-scale enterprise operations.

Why It’s Good for Business Translations: TransPerfect offers a vast global network coverage with deep domain specialization across legal, finance, marketing, and technical sectors. Their full-service capabilities include localization, transcreation, and multimedia services for comprehensive business communication needs.

Compliance & Security: Certified for ISO 9001, ISO 17100, and ISO 18587 standards, with additional HITRUST, GxP, and GDPR compliance for healthcare and regulated industry requirements.

Integrations: Provides CMS integration through GlobalLink connectors, comprehensive APIs, and data services for enterprise-level workflow automation and content management.

Customer Support: Offers 24/7 global support through 100+ offices worldwide with dedicated teams assigned to manage client relationships and project delivery.

Pros & Cons:

Pros	Cons
Massive scale and resources	Premium pricing structure
Deep industry specialization	Can be complex for smaller clients
Broad tech platform offerings (GlobalLink, DataForce)
Strong compliance (HITRUST, FDA, etc.)

Lionbridge

Lionbridge brings approximately 25 years of translation experience through their Language Cloud platform, supported by a network of 21,000+ translation experts and specialized industry teams. Operating across 70+ languages, they combine enterprise-grade technology with human expertise through their Language Cloud platform and specialized connectors. The company maintains strong security credentials with ISO 9001 QMS, ISO 27001, ISO 27701, and ISO 27017 certifications, ensuring GDPR compliance for data protection. Their global coverage includes localized support and 24/5/365 service desks, with Language Cloud connectors like Clay Tablet and API integrations for application connectivity.

Why It’s Good for Business Translations: Lionbridge brings deep enterprise translation experience with strong localization technology and global coverage across many industries. Their rich heritage in primary LSP services provides reliability for international business communication needs.

Compliance & Security: Maintains ISO 9001 QMS certification along with ISO 27001, ISO 27701, and ISO 27017 security standards, ensuring comprehensive GDPR compliance for data protection.

Integrations: Language Cloud platform includes connectors like Clay Tablet and API integrations for applications, providing robust technology integration capabilities for enterprise workflows.

Customer Support: Provides global coverage with localized support teams and 24/5/365 service desks for continuous client assistance and project management.

Pros & Cons:

Pros	Cons
Extensive global reach	Past legal controversies
Reliable quality management	Less agile than smaller vendors
Robust tech integration (platform, APIs)
Strong information security (ISO 27001 et al.)

RWS Group

RWS Group leads the translation industry with over 40 years of experience since 1982, specializing in intellectual property and patent translation with strong life sciences expertise. Their comprehensive platform includes Trados (SDL) and HAI MT technologies, offering 250+ language pairs for extensive global coverage. The company maintains rigorous quality standards through ISO 9001 and ISO 17100 certifications, plus ISO 27001 information security management and FDA 21 CFR 11 compliance for life science applications. RWS integrates Trados and machine translation (HAI) systems within its complete localization technology suite, supporting enterprise-level translation workflows.

Why It’s Good for Business Translations: RWS combines world-class domain expertise in patents and regulated industries with AI and human hybrid translation workflows. Their large scale and established reputation make them trusted partners for demanding corporate clients requiring specialized technical accuracy.

Compliance & Security: ISO 9001 and ISO 17100 certified with an ISO 27001 information security management system and FDA 21 CFR 11 compliance for life science industry requirements.

Integrations: Trados and machine translation (HAI) integration with a comprehensive localization technology suite for enterprise workflow management and content processing.

Customer Support: Global support infrastructure with headquarters in the UK and 30+ sites worldwide, providing expert teams for specialized project management and technical assistance.

Pros & Cons:

Pros	Cons
Extensive language coverage and subject-matter expertise	Enterprise-scale costs
Mature QA processes (ISO-certified)	Not focused on consumer/localization needs
Integrated tech stack (Trados/HAI)

Welocalize

Welocalize has operated for over 25 years, since 1997, managing 300+ languages through its OPAL platform for workflow management. Their specialization spans legal, finance, and technology sectors, utilizing AI/PEMT and neural machine translation for efficient project delivery. The company demonstrates exceptional compliance credentials with seven ISO certifications, including 9001, 17100, 27001, 18587, 27701, 13485, and 14001, covering quality management through environmental standards. Welocalize integrates through its OPAL API with connectors for various CMS and authoring platforms, supported by 24/7 program managers and client-dedicated teams.

Why It’s Good for Business Translations: Welocalize excels at managing large multilingual projects with deep experience across technology, marketing, and regulated domains. Their comprehensive approach suits complex business translation requirements across multiple industries.

Compliance & Security: Maintains seven ISO certifications, including 9001, 17100, 27001, 18587, 27701, 13485 (medical), and 14001 (environmental), demonstrating comprehensive quality and security management.

Integrations: OPAL API integration with connectors for CMS and authoring platforms, providing seamless workflow automation and content management capabilities.

Customer Support: 24/7 program managers with client-dedicated teams ensure continuous support and personalized attention for complex multilingual project requirements.

Pros & Cons:

Pros	Cons
Broad ISO/QMS suite (including ISO 13485 medical)	May be overkill for small projects
Strong enterprise-grade tooling	Larger corporate overhead
Deep regulated-industry experience

LanguageWire

LanguageWire has operated for 25 years, since 1999, serving 175+ languages through their cloud-based TMS with Smart Editor functionality. Their AI-enabled translation platform features native connectors for major CMS platforms, including Sitecore, WordPress, and Adobe Experience Manager. The company maintains strong security credentials with ISO 27001 information security, ISO 17100 translation standards, ISO 9001 quality management, ISO 18587, ISO 13485, and TISAX certifications. LanguageWire provides enterprise support with particular emphasis on data security through TISAX compliance, while offering TMS and machine translation tools for streamlined workflow management.

Why It’s Good for Business Translations: LanguageWire’s platform-first model gives businesses control through TMS and automation while providing managed translation services to reduce operational overhead. Their approach balances technology efficiency with professional service delivery.

Compliance & Security: ISO 27001 information security, ISO 17100 translation, ISO 9001 QMS, ISO 18587, ISO 13485, and TISAX certifications provide comprehensive security and quality assurance.

Integrations: Native connectors for Sitecore, Drupal, Adobe AEM, plus TMS and machine translation tools for seamless enterprise content management and workflow automation.

Customer Support: Enterprise-focused support with strong emphasis on data security through TISAX compliance, ensuring secure handling of sensitive business content and communications.

Pros & Cons:

Pros	Cons
Enterprise-grade CMS integration	Limited brand awareness in US market
Strong security certifications	Less service-centric than traditional agencies
Agile and innovative (AI workflows)

Acclaro

Acclaro brings 23 years of experience since 2002, delivering strategic, people-centered translation services across 125+ languages. Their technology platform includes MyAcclaro and WordsOnline cloud TMS with strong analytics capabilities for project tracking and quality management. The company maintains an ISO 27001 information security management system, ISO 17100 translation service requirements, and ISO 18587 machine translation post-editing standards. Acclaro integrates through the MyAcclaro API with various CMS and technology platforms, plus machine translation engines for efficient workflow processing.

Why It’s Good for Business Translations: Acclaro focuses on high-quality translation and localization, especially for marketing and brand content, with processes specifically tuned for enterprise workflows. Their strategic approach ensures brand consistency across international markets.

Compliance & Security: ISO 27001 information security management system, ISO 17100 translation service requirements, and ISO 18587 machine translation post-editing certification for comprehensive quality assurance.

Integrations: MyAcclaro API integrates with CMS and technology platforms, plus machine translation engines for streamlined content processing and workflow automation.

Customer Support: US-based support with dedicated client success managers providing personalized attention and strategic guidance for business translation projects.

Pros & Cons:

Pros	Cons
High-touch account management	Smaller global footprint
Rigorous ISO-compliant processes	Potential higher costs for full service

MasterWord

MasterWord has operated for over 30 years, since 1993, specializing in healthcare, government, and nonprofit sectors while serving 250+ languages. Their comprehensive Language Access services combine interpretation and translation capabilities with custom workflow development. The company maintains an ISO 9001 quality management system, ISO 17100 translation service requirements, and ISO 13611 community interpreting standards for professional service delivery. MasterWord provides client portals through MyMasterWord with custom workflow capabilities, supported by 24/7 phone interpreting and both on-site and remote support for government and healthcare clients.

Why It’s Good for Business Translations: MasterWord offers broad language coverage (250+ languages) with content and localization solutions beyond pure translation, helpful for comprehensive corporate communications. They adapt processes and resources per project to suit specific business goals and budget requirements.

Compliance & Security: The ISO 9001 quality management system, ISO 17100 translation service requirements, and ISO 13611 community interpreting standards ensure professional service quality and reliability.

Integrations: MyMasterWord client portals with custom workflows provide flexible integration options tailored to specific business requirements and operational processes.

Customer Support: 24/7 phone interpreting access with on-site and remote support specifically designed for government and healthcare sectors, ensuring continuous availability for critical communications.

Pros & Cons:

Pros	Cons
Wide service range (translation, interpreting)	US-centric with less global office coverage
Women-owned, mission-driven organization	Less focus on cutting-edge technology

Language Scientific

Language Scientific operates with 24+ years of specialized experience in life science and medical translation, serving 215+ languages with particular expertise for CROs and pharmaceutical companies. Their services include linguistic validation and cognitive debriefing for clinical research applications. The company maintains ISO 9001 quality management and ISO 17100 translation service requirements and recently achieved ISO 27001 information security management certification in 2024. Language Scientific integrates through its proprietary ASKnetwork™ for quality management and eTMF integration for clinical trial management systems.

Why It’s Good for Business Translations: Language Scientific’s specialization in regulated, technical, medical, and scientific domains ensures precision, compliance, and subject-matter depth for business content. They tailor workflows and use AI-optimized translation for efficiency without sacrificing domain accuracy.

Compliance & Security: ISO 9001, ISO 17100, and ISO 27001 (certified 2024) provide comprehensive quality management, translation service standards, and information security management.

Integrations: Proprietary ASKnetwork™ for quality management and eTMF integration support clinical trial management and regulated industry workflow requirements.

Customer Support: US headquarters in Massachusetts with specialized project managers providing expert guidance for complex scientific and medical translation projects.

Pros & Cons:

Pros	Cons
Deep pharmaceutical/device expertise	Niche market focus
Strong quality certifications (ISO 27001 + 9001 + 17100)	Premium pricing for specialist services

TOPPAN Digital Language

TOPPAN Digital Language leverages decades of global brand experience specializing in “high-risk” content across life science, financial, and intellectual property sectors. Their expertise extends to patent and regulatory translation, requiring exceptional accuracy and compliance. The company maintains ISO 9001 and ISO 17100 certifications, plus ISO 13485 for medical technology and ISO 18587 for machine translation post-editing, with HITRUST CSF for comprehensive data security. TOPPAN integrates through its STREAM AI platform with CMS connectors and advanced data security tools, supported by 24/7 global support through offices in London, Hong Kong, Madrid, and New York.

Why It’s Good for Business Translations: As part of a major Japanese global group, TOPPAN brings strong multilingual and technical capabilities, especially in Asia, plus reliability for global corporate work requiring specialized expertise in regulated industries.

Compliance & Security: ISO 9001 and ISO 17100 certifications, plus ISO 13485 for medical technology and ISO 18587 for machine translation post-editing, with HITRUST CSF for exceptionally strong data security and compliance.

Integrations: The STREAM AI platform with CMS connectors and advanced data security tools (HITRUST, ISO) provides enterprise-grade integration capabilities for sensitive content management.

Customer Support: 24/7 support through global offices, including London headquarters, Hong Kong, Madrid, and New York, ensuring comprehensive coverage across major time zones.

Pros & Cons:

Pros	Cons
Exceptionally strong security/compliance (HITRUST CSF, ISO)	High-end pricing structure
Specialized in medical/technical documentation	May not suit low-volume projects

Propio

Propio has operated for over 30 years, serving 200+ languages with best-in-class interpreting services, including VRI/OPI/ASL, plus document translation capabilities. Their specialization emphasizes HIPAA-compliant workflows for healthcare applications. The company maintains HIPAA, FERPA, and GLBA compliance along with ISO 9001 certification, with HITRUST-ready capabilities specifically focused on healthcare sector requirements. Propio integrates through its Propio ONE platform with interpreter scheduling and robust analytics tools for comprehensive service management.

Why It’s Good for Business Translations: As a specialized language service provider, Propio offers personalized service, flexibility, and competitive pricing for business translation projects with particular strength in healthcare and legal interpreting applications.

Compliance & Security: HIPAA, FERPA, and GLBA compliant with ISO 9001 certification and HITRUST-ready capabilities, ensuring rigorous data privacy protection, especially for healthcare-focused business communications.

Integrations: The Propio ONE platform includes interpreter scheduling and analytics tools, providing comprehensive service management and reporting capabilities for business clients.

Customer Support: 24/7 interpreter access with dedicated account teams and robust analytics providing continuous availability and detailed reporting for business communication needs.

Pros & Cons:

Pros	Cons
Deep expertise in medical/legal interpreting	Translation is secondary to interpretation
Rigorous data privacy (HIPAA, etc.)	Less focus on multilingual websites
24/7 service availability

Unbabel

Unbabel has approximately 10 years of experience since 2013, serving 90+ languages through its AI-powered LangOps platform. Their innovative approach blends machine translation with human post-editing and real-time quality estimation for efficient content processing. The company maintains ISO 27001 and ISO 9001 certifications while ensuring GDPR and CCPA compliance for data protection. Unbabel provides deep integrations with business platforms, including Salesforce, Zendesk, Intercom, and Slack, supported by platform-based customer support with self-service portals and AI-enhanced assistance.

Why It’s Good for Business Translations: Unbabel uses AI with human-in-the-loop translation to reduce costs and accelerate turnaround for business content while preserving quality. Their technology-first approach suits companies seeking rapid, cost-effective multilingual content creation.

Compliance & Security: ISO 27001 and ISO 9001 certified with GDPR and CCPA compliance, ensuring enterprise-grade security and data protection for business communications.

Integrations: Deep integrations with Salesforce, Zendesk, Intercom, Slack, and other business platforms provide seamless connectivity for customer service and content management workflows.

Customer Support: Platform-based support with self-service portal options, some 24/7 availability through AI assistance, plus chat and email support for technical and project assistance.

Pros & Cons:

Pros	Cons
Rapid, cost-effective multilingual content	Not a traditional full-service LSP
AI-driven efficiency	May lack domain depth for complex materials
Enterprise-grade security (ISO 27001)
Seamless integration with CS and CMS platforms

Selection criteria and review methodology for B2B translation services

Our evaluation methodology combines quantitative analysis with industry expertise to identify the best business translation services. We assessed providers based on comprehensive criteria that matter most for business success:

• Core Capabilities: We evaluated translation quality, industry specialization, technology integration, and service breadth. Companies were assessed on their ability to handle complex business content while maintaining brand consistency across markets.
• Years Operating: We considered operational experience, with companies ranging from 10 to 40+ years in business. This long-term stability indicates proven ability to adapt to changing business needs and market conditions.
• Languages Served: Coverage spans from 70 to 300+ languages, ensuring businesses can reach diverse global markets. We evaluated both language breadth and depth of expertise in key business markets.
• Compliance & Security: Critical for business applications, we assessed ISO certifications (17100, 27001, 9001), industry-specific compliance (HIPAA, GDPR, HITRUST), and data protection protocols that meet enterprise security requirements.
• Integrations: Platform connectivity through CMS, TMS, and API integrations enables seamless workflow automation. We evaluated integration depth with business systems like Salesforce, WordPress, and Adobe Experience Manager.
• Customer Support: Support quality, availability, and expertise were assessed through global coverage, dedicated account management, response times, and specialized industry knowledge for business-specific requirements.

Why choose Milengo for B2B translations

Milengo stands out as the top choice for business translations with over 30 years of proven expertise specifically in supporting global business localization projects. Their cutting-edge approach combines 100+ best-in-class translation technologies with AI-powered workflows that reduce costs by up to 80% while maintaining enterprise-grade quality. The platform’s multilingual terminology management ensures consistent brand communication across all markets, critical for business success.

Key advantages include:

• Proven B2B Expertise: Three decades of specialized experience in business localization with a deep understanding of corporate communication needs and brand consistency requirements
• Advanced Technology Integration: 50+ CMS and TMS integrations, including Adobe Experience Manager, Salesforce, and HubSpot, plus their LanguageDesk portal for streamlined content management
• Enterprise Security: ISO 17100, ISO 18587, and ISO 5060 certifications with GDPR-compliant workflows, secure client portals, and strict confidentiality protocols for sensitive business data
• Global Support Excellence: Dedicated client teams spanning EU/US/Asia time zones with localization strategy consulting, fast quote responses (under 1 day), and comprehensive onboarding support
• Transparent Pricing: Public rates calculator with competitive pricing from approximately $0.021 to $0.206 per word, ensuring cost predictability for business budgeting

Final thoughts

Selecting the right business translation services partner directly impacts your global expansion success and market credibility. The comparison reveals significant differences in specialization, technology integration, compliance standards, and support quality across providers. Data-driven evaluation of these factors ensures you choose a partner aligned with your specific business needs and growth objectives. As international markets continue expanding, professional business translation services become increasingly critical for competitive advantage and customer trust.

Ready to streamline your business translation process? Get started to see how the right translation partner can accelerate your global growth.