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At Universe, GitHub folds Copilot into Enterprise seats and lets Copilot Fusion pick the model.
Alternatives · software development tools
Bun alternatives
The best Bun alternatives in software development tools, ranked by Sparkpulse's velocity_score.
Updated Oct 28, 2026
Looking for the best alternatives to Bun? Sparkpulse tracks and ranks 12 alternatives in software development tools by shipping velocity — how frequently each ships meaningful updates, verified from official changelogs. For reference, Bun shipped 1 meaningful update in the last 30 days and carries a velocity score of 6.3 out of 10 in 2026. The alternatives below are ranked the same way, so you're comparing real release momentum, not marketing claims.
About Bun
Bun 1.4.4 adds bun fmt, a built-in Prettier-compatible formatter, two weeks after bun check.
Bun now covers formatting as well as type checking: v1.4.4 ships bun fmt, a Prettier-compatible formatter it says is 3-6x faster than oxfmt, and makes bun check 1.4-7.8x faster on large projects. The same release closes 271 issues, migrates Yarn Berry lockfiles, adds install retries with backoff, and cuts Bun.SQL CPU per query by up to 48%.
Velocity 6.3 · Last update 3d ago
Top 12 alternatives to Bun
Ranked by recent ship velocity. Tap any card for the full editorial breakdown, or pivot to a head-to-head.
DEVOPS
Speakeasy makes AI agents first-class principals: server identity modes, Slack as a work identity, and directory group role mapping
DEVOPS
Rivet 3.0 Preview runs as one stateless binary on WarpDrive, with S3 as its only dependency.
DEVOPS
CodeRabbit moves its review status to a GitHub check run and keeps Deep Scan coverage fresh.
DEVOPS
WeWeb ships a rebuilt AI builder that uses fewer tokens and shows each step as it works.
DEVOPS
Dapr 1.19 ships cross-app workflows, an MCP server and 40% faster workflow throughput.
DEVOPS
Aiven executes a coordinated enterprise security push across IAM, audit logs, and API defaults.
DEVOPS
Arrow Rust 60.1.0 ships, redacting Parquet encryption keys and adding read-ahead planning.
DEVOPS
Zed 1.26 adds Pyrefly for Python and debugs WebAssembly from the JavaScript debugger.
DEVOPS
Sanity's MCP server now advertises itself to agents through a server card and llms.txt.
DEVOPS
Kubernetes moves conformance from the cluster to the workloads running on it.
DEVOPS
Manticore 31.0.7 undoes a 2x COUNT(DISTINCT) slowdown its own collation fix caused.
Bun vs alternatives — shipping velocity at a glance
Velocity score (0–10) and meaningful releases shipped in the last 30 days, from official changelogs. Higher = shipping faster.
| Product | Velocity | Sparks · 30d | Focus areas | Latest release |
|---|---|---|---|---|
| Bun (baseline) | 6.3 | 1 | javascript-runtimetoolchainformatter | Bun v1.4.3 adds bun check, a built-in TypeScript type checker |
| GitHub | 10.0 | 2 | copilotmodel-routingenterprise-bundling | Route and orchestrate models with GitHub Copilot Fusion |
| Speakeasy | 10.0 | 0 | mcpai-agentsidentity | Directory groups grant roles on their own, and Slack accounts resolve to the people behind them |
| Rivet | 7.5 | 2 | actorsserverlessstorage engine | Introducing Rivet 3.0 Preview |
| CodeRabbit | 6.3 | 0 | code-reviewsecurity-scanninggithub | — |
| WeWeb | 6.3 | 1 | no-codeai app builderdesign systems | 🧪 AI app testing, plus new user API templates |
| Dapr | 6.3 | 1 | distributed runtimeworkflowsai agents | Dapr 1.19: cross-app workflows, MCP server, faster runtime |
| Aiven | 6.3 | 0 | enterprise-securitybyociam-rbac | — |
| Apache Arrow Rust | 5.0 | 0 | apache arrowrustparquet | — |
| Zed | 5.0 | 0 | code editorai agentsacp | — |
| Sanity | 5.0 | 0 | headless cmsmcpai agents | — |
| Kubernetes | 5.0 | 0 | conformanceworkload standardscgroup v2 | — |
| Manticore Search | 5.0 | 0 | search-engineopen-sourcesql | — |
The 12 best Bun alternatives, in depth
1. GitHub · velocity 10.0
At Universe, GitHub folds Copilot into Enterprise seats and lets Copilot Fusion pick the model.
Over the last 30 days GitHub shipped 2 meaningful updates vs Bun's 1, most recently “Route and orchestrate models with GitHub Copilot Fusion”. Its velocity score of 10.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, GitHub focuses on copilot, model routing and enterprise bundling.
Over the last 30 days GitHub has been shipping faster than Bun — a point in its favour if release momentum matters to you.
2. Speakeasy · velocity 10.0
Speakeasy makes AI agents first-class principals: server identity modes, Slack as a work identity, and directory group role mapping.
Over the last 30 days Speakeasy shipped 0 meaningful updates vs Bun's 1, most recently “Directory groups grant roles on their own, and Slack accounts resolve to the people behind them”. Its velocity score of 10.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Speakeasy focuses on mcp, ai agents and identity.
Speakeasy has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
3. Rivet · velocity 7.5
Rivet 3.0 Preview runs as one stateless binary on WarpDrive, with S3 as its only dependency.
Over the last 30 days Rivet shipped 2 meaningful updates vs Bun's 1, most recently “Introducing Rivet 3.0 Preview”. Its velocity score of 7.5/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Rivet focuses on actors, serverless and storage engine.
Over the last 30 days Rivet has been shipping faster than Bun — a point in its favour if release momentum matters to you.
4. CodeRabbit · velocity 6.3
CodeRabbit moves its review status to a GitHub check run and keeps Deep Scan coverage fresh.
Over the last 30 days CodeRabbit shipped 0 meaningful updates vs Bun's 1. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, CodeRabbit focuses on code review, security scanning and github.
CodeRabbit has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
5. WeWeb · velocity 6.3
WeWeb ships a rebuilt AI builder that uses fewer tokens and shows each step as it works.
Over the last 30 days WeWeb shipped 1 meaningful update vs Bun's 1, most recently “🧪 AI app testing, plus new user API templates”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, WeWeb focuses on no code, ai app builder and design systems.
WeWeb and Bun have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
6. Dapr · velocity 6.3
Dapr 1.19 ships cross-app workflows, an MCP server and 40% faster workflow throughput.
Over the last 30 days Dapr shipped 1 meaningful update vs Bun's 1, most recently “Dapr 1.19: cross-app workflows, MCP server, faster runtime”. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Dapr focuses on distributed runtime, workflows and ai agents.
Dapr and Bun have shipped at a similar pace over the last 30 days, so the decision comes down to fit and feature depth.
7. Aiven · velocity 6.3
Aiven executes a coordinated enterprise security push across IAM, audit logs, and API defaults.
Over the last 30 days Aiven shipped 0 meaningful updates vs Bun's 1. Its velocity score of 6.3/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Aiven focuses on enterprise security, byoc and iam rbac.
Aiven has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
8. Apache Arrow Rust · velocity 5.0
Arrow Rust 60.1.0 ships, redacting Parquet encryption keys and adding read-ahead planning.
Over the last 30 days Apache Arrow Rust shipped 0 meaningful updates vs Bun's 1. Its velocity score of 5.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Apache Arrow Rust focuses on apache arrow, rust and parquet.
Apache Arrow Rust has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
Full Apache Arrow Rust trajectory → · Compare Bun vs Apache Arrow Rust →
9. Zed · velocity 5.0
Zed 1.26 adds Pyrefly for Python and debugs WebAssembly from the JavaScript debugger.
Over the last 30 days Zed shipped 0 meaningful updates vs Bun's 1. Its velocity score of 5.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Zed focuses on code editor, ai agents and acp.
Zed has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
10. Sanity · velocity 5.0
Sanity's MCP server now advertises itself to agents through a server card and llms.txt.
Over the last 30 days Sanity shipped 0 meaningful updates vs Bun's 1. Its velocity score of 5.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Sanity focuses on headless cms, mcp and ai agents.
Sanity has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
11. Kubernetes · velocity 5.0
Kubernetes moves conformance from the cluster to the workloads running on it.
Over the last 30 days Kubernetes shipped 0 meaningful updates vs Bun's 1. Its velocity score of 5.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Kubernetes focuses on conformance, workload standards and cgroup v2.
Kubernetes has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
12. Manticore Search · velocity 5.0
Manticore 31.0.7 undoes a 2x COUNT(DISTINCT) slowdown its own collation fix caused.
Over the last 30 days Manticore Search shipped 0 meaningful updates vs Bun's 1. Its velocity score of 5.0/10 blends that with longer-term release cadence.
Where Bun leans on javascript runtime, toolchain and formatter, Manticore Search focuses on search engine, open source and sql.
Manticore Search has shipped fewer meaningful updates than Bun in the last 30 days, so weigh it on fit and feature depth rather than recent pace.
Full Manticore Search trajectory → · Compare Bun vs Manticore Search →
Frequently asked questions
What are the best alternatives to Bun?
The top Bun alternatives we currently track in software development tools are GitHub, Speakeasy, Rivet, CodeRabbit, WeWeb, ranked by recent ship velocity.
How is this list of Bun alternatives ranked?
Alternatives are ranked by Sparkpulse's velocity_score — release cadence + 30-day spark count + sector-relative ship rate.
Can I compare Bun directly with one of these alternatives?
Yes — every card has a "Compare with Bun" link to a side-by-side /compare page.