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Rebar3

Free#33 of 92 in Package Managers

Rebar3: A focused open-source build and release tool for Erlang/OTP dependency workflows. Ranked #33 of 92 in Package Managers by our editors (6.0/10); pricing: Open source; best for erlang/OTP projects with release workflows.

6.0/10Editor score

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At a glance

Editor score
6.0 / 10
Pricing
Open source
Best for
Erlang/OTP projects with release workflows
Paid from
Free
Lockfile support
Yes
Facts checked
22 Sep 2026

Where it wins
- Supports Git, Mercurial, Hex, and local package dependencies
- Lockfiles, dependency resolution, and circular-dependency detection
- Templates, umbrella projects, releases, escripts, and plugins
Where it doesn't
- Its verified compatibility is centered on Erlang/OTP environments
- It is a command-line tool rather than a hosted subscription product
- Its package ecosystem integration is centered on Hex

Our verdict on Rebar3

Rebar3 is an open-source Erlang build tool for creating, developing, testing, packaging, and releasing Erlang libraries, applications, and systems. It is designed for Erlang/OTP developers and teams working across projects of different sizes, including umbrella projects with multiple applications. Rebar3 runs as a self-contained Erlang script and is available on Windows, macOS, and Linux, with documented compatibility including OTP 26–28 for Rebar3 3.25.1.

The published product details describe an open-source command-line distribution rather than a hosted subscription plan. Its package workflow covers Hex packages, Git sources, Mercurial sources, and local path dependencies. Rebar3 can resolve dependency trees, detect circular dependencies, and generate or use rebar.lock lockfiles for repeatable builds. For teams working with private package infrastructure, it supports Hex repositories, mirrors, private repositories, and private registry authentication. Offline installation is also supported.

Rebar3’s breadth extends beyond dependency management. Project templates cover applications, libraries, releases, escripts, plugins, and CMake projects, while built-in capabilities support release and escript distribution. Umbrella project support helps organize multiple Erlang/OTP applications, and plugins can extend commands and build behavior. This makes Rebar3 a strong fit for teams that want one Erlang-focused tool spanning development through release workflows. Teams seeking a hosted package-management service or an ecosystem centered outside Erlang/OTP should look elsewhere, while Erlang/OTP projects with Hex, private repositories, lockfiles, and release requirements are the clearest match.

Your product? Our editors can test Rebar3 in depth and publish a review, labelled as paid · from $149/mo →

Rebar3 pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on rebar3.org

Rebar3 fact sheet

Free plan	Not verified
Paid from	Free
Package formats	Hex packages; Git sources; Mercurial sources; local path dependencies
Supported platforms	Erlang/OTP environments; documented compatibility includes OTP 26–28 for Rebar3 3.25.1
Dependency resolution	Yes
Lockfile support	Yes
Workspace support	Yes
Private registry auth	Yes
Offline installation	Yes
Deployment	Self-hosted
Platforms	Windows, macOS, Linux
Support	Community, Docs
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations	1 integrations: Hex
Pricing	Open source
Website	rebar3.org
Facts checked	22 Sep 2026

Rebar3 integrations

Rebar3 lists 1 integrations on its own site.

Alternatives to Rebar3

See all Rebar3 alternatives →

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Featured on iTechGuides

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update