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.
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 alternatives
Other localization i18n we track, ranked by the same independent score.
- CrowdinA cloud-based platform for managing translations and localization workflows across multiple languages and integrations.medium · 55%
- WeblateWeb interface for translating software projects with integrated version controllow · 25%
- LokaliseDeliver multilingual content with speed and quality using AI-powered collaborative translationmedium · 56%
- FormatJSlow · 10%
- TransifexStreamline multi-language localization at scale using AI-powered workflows without increasing operational overheadmedium · 61%
- Pontoonlow · 28%
Compare ICU
Side by side against other localization i18n, attribute by attribute, with a source on every value.
The Vioscale 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 |
|---|---|---|---|---|
| Price level | 100 | 0.05 | 5.2 | ✓ |
| Development activity | 50 | 0.09 | 4.7 | ✓ |
| Dependent projects | 63 | 0.06 | 4.0 | ✓ |
| Release cadence | 76 | 0.05 | 3.9 | ✓ |
| Security score | 89 | 0.04 | 3.7 | ✓ |
| Integrations | 38 | 0.09 | 3.6 | ✓ |
| Stars | 67 | 0.03 | 1.7 | ✓ |
| Reliability | 0 | 0.07 | 0.0 | - |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Security posture | 0 | 0.07 | 0.0 | - |
| Package downloads | 0 | 0.14 | 0.0 | - |
| Pricing transparency | 0 | 0.08 | 0.0 | - |
| Developer Q&A activity | 0 | 0.06 | 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 | 38 | mediumsource · 2026-08-26 · 65% |
Adoption
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 20 | mediumsource · 2026-08-19 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C++ | highsource · 2026-08-26 · 90% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-19 · 75% |