head to head · open source
Vector vs opentelemetry-cpp
Vector has 22,793 GitHub stars, 2,371 forks, 2,512 open issues and last shipped yesterday. opentelemetry-cpp has 1,390 stars, 660 forks, 290 open issues and last shipped yesterday. Vector leads on adoption by 1,540% (22,793 vs 1,390 stars). Vector is written in Rust under MPL-2.0; opentelemetry-cpp is written in C++ under Apache-2.0. Vector has attracted 10% as many forks as stars, opentelemetry-cpp 47%. Vector was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (metrics), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Vector | opentelemetry-cpp | |
|---|---|---|
| GitHub stars | ★ 23K | ★ 1.4K |
| License | MPL-2.0 | Apache-2.0 |
| Written in | Rust | C++ |
| Last push | 2026-11-04 | 2026-11-04 |
| Forks | ⑂ 2.4K | ⑂ 660 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Vector if
- You weight community size — 23K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches Rust
- You value the larger contributor base for long-term maintenance
pick opentelemetry-cpp if
- You want the opentelemetry-cpp feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches C++
- You evaluated both and opentelemetry-cpp fits your workflow better
About Vector
Quickstart • Docs • Guides • Integrations • Chat • Download • Container Images • Rust Crate Docs What is Vector? Vector is a high performance, end to end (agent & aggregator) observability data pipeline that puts you in control of your observability data. [Collect][docs.sources], [transform][docs.transforms], and [route][docs.sinks] all your logs and metrics to any vendors you want today and any other vendors you may want tomorrow. Vector enables dramatic cost reduction, novel data enrichment, and data security where you need it, not where it is most convenient for your…
read the full Vector overview →
About opentelemetry-cpp
OpenTelemetry C++ The C++ OpenTelemetry client. Project Status Stable across all 3 signals i.e. Logs , Metrics , and Traces . See Spec Compliance Matrix to understand which portions of the specification has been implemented in this repo. Supported C++ Versions Code shipped from this repository generally supports the following versions of C++ standards: ISO/IEC 14882:2014 (C++14) ISO/IEC 14882:2017 (C++17) ISO/IEC 14882:2020 (C++20) ISO/IEC 14882:2024 (C++23) Any exceptions to this are noted in the individual README.md files. Please note that supporting the C Programming Language) is not a goal of the current…
read the full opentelemetry-cpp overview →
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Frequently asked questions
Is Vector or opentelemetry-cpp more popular?
Vector has 22,793 GitHub stars and opentelemetry-cpp has 1,390. Vector has the larger community by that measure.
Are Vector and opentelemetry-cpp free?
Both are open source. Vector is licensed under MPL-2.0 and opentelemetry-cpp under Apache-2.0. Neither carries a licence fee.
What is the difference between Vector and opentelemetry-cpp?
Vector is written in Rust and opentelemetry-cpp in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Vector or opentelemetry-cpp?
Choose Vector if you want the larger community (22,793 stars) or its MPL-2.0 licence terms. Choose opentelemetry-cpp if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.