Developer Tools · head to head
Fig vs Nixpacks
Fig
Developer Tools
IDE-style autocomplete for your existing terminal
- From
- Free
- Rated
- -
Nixpacks
Developer Tools
Build system that turns a source directory into an OCI image, now in maintenance mode
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Fig shut down on 1 September 2024. Amazon acquired Fig in August 2023 and folded it into Amazon Q Developer, which now carries the terminal autocomplete; Nixpacks the project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which Fig and Nixpacks actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Developer Tools).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Fig
Nothing recorded that Nixpacks does not also cover.
Only in Nixpacks
- Automatic language detection
- No Dockerfile required
- Nix toolchains
- Configuration escape hatches
- Docker layer caching
What people use each for
The jobs each tool is most often brought in to do.
Fig
No use cases recorded yet. See the Fig review.
Nixpacks
- Understanding the build behaviour of a platform that adopted Nixpacks before it was frozennot Fig
- Producing container images from a polyglot monorepo where nobody wants to own several Dockerfilesnot Fig
- Reproducing an existing Railway build locally while planning a migration to Railpacknot Fig
- Comparing what a Nix based builder does differently from a buildpack before choosing a successornot Fig
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Fig
- Shut down on 1 September 2024. Amazon acquired Fig in August 2023 and folded it into Amazon Q Developer, which now carries the terminal autocomplete
- The standalone desktop app is no longer available or supported
- The completion specs remain open source on GitHub, but the product that consumed them is gone
Nixpacks
- The project is in maintenance mode with no commits on the default branch since May 2026 and no release since October 2025, so support for new language versions arrives only if someone forks it.
- Build determinism is softer than it appears, because providers pin a nixpkgs archive commit and bumping that archive silently moves compiler and runtime versions underneath a build that looks unchanged.
- Caching is limited to Docker layers rather than a content addressed graph, so a small change early in the build invalidates everything after it, which is exactly the limitation Railpack was rewritten to fix.
- Images carry Nix store layers and come out larger than an equivalent tuned Dockerfile or buildpack output, which costs registry storage and slows cold pulls on scale-out.
- There is no specification, no vendor neutral governance and no third party provider ecosystem, so a single company was able to redirect strategy and leave every downstream user with a frozen build tool.
Pricing, plan by plan
Fig
FreeNo published plan breakdown. See the Fig review.
Nixpacks
Free- NixpacksFree
- MIT licensed, no usage limits
- No commercial edition and no support contract
- In maintenance mode, superseded by Railpack
Which should you pick?
Choose Nixpacks if
- You need automatic language detection.
- You want to start without paying.
- You work on Linux, macOS, CLI, Docker.
- You also want no dockerfile required.
Questions people ask
- Is Fig or Nixpacks better?
- Neither clearly leads. Fig starts at Free and Nixpacks at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Fig or Nixpacks?
- Fig starts at Free and Nixpacks at Free.
- Does Fig or Nixpacks run on more platforms?
- Fig runs on Web. Nixpacks runs on Linux, macOS, CLI, Docker.
- Can I use Fig for free?
- Both have a free tier, so you can try either at no cost before committing.
- What can Fig do that Nixpacks cannot?
- Nixpacks covers Automatic language detection, No Dockerfile required, Nix toolchains, Configuration escape hatches.
Answered from the vendors’ own pages
Nixpacks: Should I start a new project on Nixpacks?
No. The documentation and README both say it is in maintenance mode and recommend Railpack. Choose Railpack, Cloud Native Buildpacks or a Dockerfile instead.
Nixpacks: Will my existing Nixpacks builds stop working?
Not immediately. Pinned nixpkgs archives keep resolving, so builds continue. What you lose is support for new runtime major versions and any fix for a provider bug.
Nixpacks: What replaces it?
Railpack, also from Railway and also MIT licensed, rebuilt as a BuildKit custom frontend for finer grained caching and parallel steps.
Nixpacks: Is it still open source?
Yes, MIT, and the repository is not archived. Being open source does not help much when nobody is merging provider updates.
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