What is PCRE2?
A free regular expression matching library that implements Perl 5 syntax with extensive Unicode and character encoding support. It offers both traditional backtracking and JIT-compiled matching engines, available through native and POSIX-compatible APIs.
PCRE2 pricing
We don't have PCRE2'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 PCRE2 does
The capabilities that matter for regex tools, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- Redos resistant
- -
- Lookaround support
- ✓
- Backreferences
- ✓
- Unicode property escapes
- -
- Named captures
- -
- Multi pattern matching
- -
- Interface type
- Library
- Visualization
- -
- Code generation
- ✓
Platform & deployment
Independently observed- CLI
- macOS
- Linux
- Windows
- Self-hosted
Integrations (2)
Independently observed- Exim
- Nginx
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
PCRE2 FAQ
Common questions about PCRE2, answered from independent, dated evidence.
What is PCRE2?
A free regular expression matching library that implements Perl 5 syntax with extensive Unicode and character encoding support. It offers both traditional backtracking and JIT-compiled matching engines, available through native and POSIX-compatible APIs. It is indexed under Regex Tools.
Source: https://www.pcre.org/
Is PCRE2 free to use?
PCRE2 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://www.pcre.org/
What platforms does PCRE2 support?
PCRE2 supports Windows, macOS, Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://www.pcre.org/
Can PCRE2 be self-hosted?
Yes. PCRE2 can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.
Source: https://www.pcre.org/
PCRE2 alternatives
Other regex tools we track, ranked by the same independent score.
- regex (Python module)Python regex engine extending the standard re module with additional featureslow · 43%
- HyperscanA high-performance C library for efficiently matching multiple regular expressions at oncelow · 31%
- RegExrTest regular expressions with real-time feedbacklow · 22%
- RE2A fast and safe regular expression library that prevents performance catastropheslow · 35%
- OnigurumaA C library for regular expression pattern matchinglow · 30%
- RegexBuddyA desktop tool for learning, creating, debugging, and managing regular expressionslow · 19%
Compare PCRE2
Side by side against other regex tools, 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 PCRE2, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 63 | 0.12 | 7.6 | ✓ |
| Capabilities | 58 | 0.08 | 4.8 | ✓ |
| Release cadence | 72 | 0.07 | 4.8 | ✓ |
| Dependent projects | 35 | 0.08 | 2.8 | ✓ |
| Stars | 59 | 0.03 | 2.0 | ✓ |
| Integrations | 14 | 0.05 | 0.7 | ✓ |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Security score | 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 | 100 | mediumsource · 2026-10-05 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 4 items | mediumsource · 2026-09-10 · 60% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Backreferences: Yes · Interface type: library · Code generation: Yes · Lookaround support: Yes | mediumsource · 2026-10-05 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 2 | mediumsource · 2026-08-19 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | C | highsource · 2026-10-05 · 90% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=pcre2&per_page=100 · Last 12m: 0 | highsource · 2026-10-05 · 90% |
Is PCRE2 the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank PCRE2 against the rest of the regex tools we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
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