Comparison
chromem-go vs pgvecto.rs
Verdict
Pick chromem-go if chromem-go is an embeddable vector database for Go that provides a Chroma-like interface with no third-party dependencies, suitable for applications needing in-memory persistence and cosine similarity search capabilities; pick pgvecto.rs if pgvecto.rs extends PostgreSQL for efficient vector searches using Rust.
Markdown twin · chromem-go alternatives · pgvecto.rs alternatives
GraphCanon updated 4w
vs
Trust & integrity
| Signal | chromem-go | pgvecto.rs |
|---|---|---|
| Maintenance | Steady (65d since push) As of 4w · github_public_v1 | Dormant (510d since push) As of 1mo · github_public_v1 |
| Provenance | Not a fork · Personal account As of 4w · github_public_v1 | Not a fork · Organization account As of 1mo · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- chromem-go
- Embeddable vector database for Go with Chroma-like interface.
- pgvecto.rs
- Scalable, Low-latency and Hybrid-enabled Vector Search in Postgres
Stars
- chromem-go
- 1.0k
- pgvecto.rs
- 2.2k
Forks
- chromem-go
- 71
- pgvecto.rs
- 84
Open issues
- chromem-go
- 17
- pgvecto.rs
- 76
Language
- chromem-go
- Go
- pgvecto.rs
- Rust
Adopt for
- chromem-go
- Chromem-go is an embeddable vector database for Go that provides a Chroma-like interface with no third-party dependencies, suitable for applications needing in-memory persistence and cosine similarity search capabilities
- pgvecto.rs
- pgvecto.rs extends PostgreSQL for efficient vector searches using Rust.
Persona
- chromem-go
- -
- pgvecto.rs
- -
Runtime
- chromem-go
- -
- pgvecto.rs
- -
License
- chromem-go
- MPL-2.0
- pgvecto.rs
- Apache-2.0
Last pushed
- chromem-go
- May 17, 2026
- pgvecto.rs
- Feb 26, 2025
Categories
- chromem-go
- Vector Databases
- pgvecto.rs
- Vector Databases
Trust and health
Maintenance
- chromem-go
- Steady (60%)
- pgvecto.rs
- Dormant (18%)
Days since push
- chromem-go
- 65d
- pgvecto.rs
- 510d
Open issues (now)
- chromem-go
- 17
- pgvecto.rs
- 76
Owner type
- chromem-go
- User
- pgvecto.rs
- Organization
Full report
- chromem-go
- Trust report
- pgvecto.rs
- Trust report
Choose chromem-go if…
- chromem-go is primarily Go; pgvecto.rs is Rust.
- License: chromem-go is MPL-2.0, pgvecto.rs is Apache-2.0.
- Requirements: Min 0.5 GB RAM.
- Tags unique to chromem-go: chroma, cosine-similarity, embeddings, in-memory.
- If you are building applications in Go and require an in-memory vector database without additional third-party libraries.
When NOT to use chromem-go
- Avoid Chromem-go if you seek a traditional, disk-based persistence model as it primarily supports in-memory operations with optional persistence options.
- Chromem-go is not the best choice if your application requires heavy concurrent load and large-scale data handling which might surpass the in-memory capability limits of this library.
Choose pgvecto.rs if…
- pgvecto.rs is primarily Rust; chromem-go is Go.
- License: pgvecto.rs is Apache-2.0, chromem-go is MPL-2.0.
- Tags unique to pgvecto.rs: chatgpt, faiss, gpt, hacktoberfest.
- Need integration with PostgreSQL for vector searches
When NOT to use pgvecto.rs
- Preferring a database system without PostgreSQL dependencies
- Looking for a standalone solution, as pgvecto.rs is a PostgreSQL extension
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (philippgille/chromem-go) · observed Jul 22, 2026
- GitHub forks (philippgille/chromem-go) · observed Jul 22, 2026
- Last push (philippgille/chromem-go) · observed May 17, 2026
- License file (MPL-2.0) · observed Jul 22, 2026
- Decision facts (enrichment) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (tensorchord/pgvecto.rs) · observed Jul 22, 2026
- GitHub forks (tensorchord/pgvecto.rs) · observed Jul 22, 2026
- Last push (tensorchord/pgvecto.rs) · observed Feb 26, 2025
- License file (Apache-2.0) · observed Jul 22, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: chromem-go 1.0k · pgvecto.rs 2.2k (synced Jul 22, 2026).
Common questions
- What is the difference between chromem-go and pgvecto.rs?
- chromem-go: Embeddable vector database for Go with Chroma-like interface.. pgvecto.rs: Scalable, Low-latency and Hybrid-enabled Vector Search in Postgres. See the comparison table for live GitHub stats and shared categories.
- When should I choose chromem-go over pgvecto.rs?
- Choose chromem-go over pgvecto.rs when chromem-go is primarily Go; pgvecto.rs is Rust; License: chromem-go is MPL-2.0, pgvecto.rs is Apache-2.0; Requirements: Min 0.5 GB RAM; Tags unique to chromem-go: chroma, cosine-similarity, embeddings, in-memory; If you are building applications in Go and require an in-memory vector database without additional third-party libraries.
- When should I choose pgvecto.rs over chromem-go?
- Choose pgvecto.rs over chromem-go when pgvecto.rs is primarily Rust; chromem-go is Go; License: pgvecto.rs is Apache-2.0, chromem-go is MPL-2.0; Tags unique to pgvecto.rs: chatgpt, faiss, gpt, hacktoberfest; Need integration with PostgreSQL for vector searches.
- When should I avoid chromem-go?
- Avoid Chromem-go if you seek a traditional, disk-based persistence model as it primarily supports in-memory operations with optional persistence options. Chromem-go is not the best choice if your application requires heavy concurrent load and large-scale data handling which might surpass the in-memory capability limits of this library.
- When should I avoid pgvecto.rs?
- Preferring a database system without PostgreSQL dependencies Looking for a standalone solution, as pgvecto.rs is a PostgreSQL extension
- Is chromem-go or pgvecto.rs more popular on GitHub?
- pgvecto.rs has more GitHub stars (2,179 vs 1,033). Stars measure visibility, not whether either tool fits your constraints.
- Are chromem-go and pgvecto.rs open source?
- Yes - both are open-source projects on GitHub (chromem-go: MPL-2.0, pgvecto.rs: Apache-2.0).
- Where can I find alternatives to chromem-go or pgvecto.rs?
- GraphCanon lists graph-backed alternatives at chromem-go alternatives and pgvecto.rs alternatives (chromem-go markdown twin, pgvecto.rs markdown twin), ranked by typed relationship edges rather than popularity votes.
- Is there a machine-readable version of this comparison?
- Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, chromem-go or pgvecto.rs?
- chromem-go: Steady. pgvecto.rs: Dormant. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.
- Where are the full trust reports for chromem-go and pgvecto.rs?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: chromem-go trust report; pgvecto.rs trust report.