Available worldwide
What is ICU?
ICU is a widely-used open-source library that provides Unicode text handling, internationalization services, and localization support for C, C++, and Java applications. It fills gaps in platform-native Unicode support, enabling portable text processing across operating systems and programming environments.
ICU pricing
We don't have ICU's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
What ICU does
The capabilities that matter for localization i18n, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Cldr plural rules
- ✓
- Rtl bidi support
- -
- Translation memory
- -
- Glossary terminology
- -
- In context editing
- -
- Ota updates
- -
- Self hostable
- -
- Managed translation services
- -
- Qa checks
- -
Platform & deployment
Independently observed- CLI
- iOS
- macOS
- Web
- Linux
- Android
- Windows
Integrations (20)
Independently observed- Adobe
- Amazon (Kindle)
- Apache
- Apple
- eBay
- Chrome
- Android
- Google Maps
- Google Analytics
- Gmail
- Facebook (HHVM)
- Microsoft
- Eclipse
- FreeBSD
- Debian Linux
- CouchDB
- Firebird RDBMS
- ESRI
- CERN
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
ICU FAQ
Common questions about ICU, answered from independent, dated evidence.
What is ICU?
ICU is a widely-used open-source library that provides Unicode text handling, internationalization services, and localization support for C, C++, and Java applications. It fills gaps in platform-native Unicode support, enabling portable text processing across operating systems and programming environments. It is indexed under Localization I18N.
Source: https://icu.unicode.org
Is ICU free to use?
ICU is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.
Source: https://icu.unicode.org
What platforms does ICU support?
ICU supports the web, Windows, macOS, Linux, iOS, Android and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://icu.unicode.org
What does ICU integrate with?
We have confirmed 18 integrations for ICU, including Adobe, Amazon (Kindle), Apache, Apple, eBay, Google, Chrome and Android, plus 10 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://icu.unicode.org
ICU alternatives
Other localization i18n we track, ranked by the same independent score.
- TransifexAn AI-powered localization platform that enables rapid, cost-effective translation and deployment across global markets without proportional increases in operatmedium · 73%
- LokaliseCloud-based translation management solution enabling teams to localize software through file-based workflows and API accessmedium · 71%
- CrowdinAn AI-powered platform for automating translations and managing multilingual content across productsmedium · 73%
- i18nextA JavaScript library for managing multi-language support in web applications with consistent translation across frameworksmedium · 62%
- FormatJSlow · 22%
- WeblatePrivacy-focused, open source localization platform for collaborative translation workflowslow · 39%
Compare ICU
Side by side against other localization i18n, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for ICU, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 57 | 0.12 | 6.8 | ✓ |
| Dependent projects | 63 | 0.08 | 5.1 | ✓ |
| Release cadence | 73 | 0.07 | 4.9 | ✓ |
| Security score | 90 | 0.05 | 4.8 | ✓ |
| Price level | 100 | 0.04 | 4.0 | ✓ |
| Capabilities | 29 | 0.10 | 2.9 | ✓ |
| Stars | 67 | 0.03 | 2.2 | ✓ |
| Integrations | 38 | 0.05 | 2.0 | ✓ |
| Reliability | 0 | 0.05 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Pricing transparency | 0 | 0.05 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 63 | mediumsource · 2026-10-13 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 4 items | mediumsource · 2026-09-10 · 60% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Cldr plural rules | mediumsource · 2026-10-13 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 20 | mediumsource · 2026-08-19 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C++ | highsource · 2026-10-13 · 90% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-19 · 75% |
Pricing
Release
Security
Is ICU the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank ICU against the rest of the localization i18n we index, using the same dated evidence weighted your way.
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Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves ICU up or down: nobody can buy rank here, including you.
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- Correct anything wrong, with evidence
- Point our crawler at the pages that matter
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