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Slumber alternatives: 5 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave Slumber: collections are edited as YAML by hand, and HTTP only, no gRPC or WebSockets. We ranked 5 alternatives by how directly each one replaces Slumber, then by reviews, real visits and how recently each app's facts were checked against its own website. Posting currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1Posting logoPostingOpen sourceYesLinux, macOS, Windows4 of 466.5
2ATAC logoATACOpen sourceYesLinux, macOS, Windows3 of 362.6
3Hurl logoHurlOpen sourceYesLinux, macOS, Windows4 of 459.6
4Bruno logoBrunoOpen sourceYesWindows, macOS, Linux3 of 357.5
5httpYac logohttpYacOpen sourceYesWindows, macOS, Linux4 of 457.2
  1. Posting logo

    1. PostingTop pick

    Best for: Keyboard-driven developers who want a full API client in the terminal

    Open sourceLinux, macOS, Windows

    66.5

    score / 100

    Why switch from Slumber

    A richer terminal interface with gRPC and GraphQL support.

    Pros

    • Full interface in the terminal, works over SSH
    • Collections as YAML files in Git
    • HTTP, GraphQL and gRPC
    • Free, Apache 2.0 licensed

    Cons

    • Terminal interface takes getting used to
    • No built-in team sync
    • Some features still in beta
    Visit Posting Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Posting a good Slumber alternative?

    Verified facts

    4 of 4 verified
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Protocols
    HTTP, GraphQL, gRPC
    Checked Oct 25, 2026posting.sh(opens source in a new tab)
    Git-friendly
    Yes
    Checked Oct 25, 2026posting.sh(opens source in a new tab)
    Open source
    Yes
    Checked Oct 25, 2026posting.sh(opens source in a new tab)
  2. ATAC logo

    2. ATAC

    Best for: Terminal users who want a Postman-style layout without a GUI app

    Open sourceLinux, macOS, Windows

    62.6

    score / 100

    Why switch from Slumber

    A Postman-style terminal client that imports Postman collections.

    Pros

    • Postman-like layout in the terminal
    • Single Rust binary, works offline
    • Imports Postman, OpenAPI and curl
    • Free, MIT licensed

    Cons

    • Fewer features than desktop clients
    • Young, volunteer-maintained project
    • Terminal interface has a learning curve
    Visit ATAC Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is ATAC a good Slumber alternative?

    Verified facts

    3 of 3 verified
    License
    MIT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Interface
    Terminal
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Repository status
    Active
    Checked Oct 25, 2026github.com(opens source in a new tab)
  3. Hurl logo

    3. Hurl

    Best for: Developers who want readable, plain-text API tests that run in CI

    Open sourceLinux, macOS, Windows

    59.6

    score / 100

    Why switch from Slumber

    Plain-text request files with assertions, for CI tests.

    Pros

    • Plain-text files that diff well in Git
    • Assertions, captures and chained requests
    • Fast, built on libcurl
    • Free and open source

    Cons

    • No graphical interface
    • Text format to learn for complex flows
    • Not suited to exploring APIs interactively
    Visit Hurl Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Hurl a good Slumber alternative?

    Verified facts

    4 of 4 verified
    License
    Apache-2.0
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Format
    Plain text
    Checked Oct 25, 2026hurl.dev(opens source in a new tab)
    Platforms
    Linux, macOS, FreeBSD, Windows
    Checked Oct 25, 2026hurl.dev(opens source in a new tab)
    Maintainer
    Orange
    Checked Oct 25, 2026github.com(opens source in a new tab)
  4. Bruno logo

    4. Bruno

    Best for: Developers who want API collections stored in Git, offline

    Open sourceWindows, macOS, Linux

    57.5

    score / 100

    Why switch from Slumber

    A desktop app with collections stored as plain files.

    Pros

    • Collections are plain files in Git
    • No cloud account required
    • Imports Postman collections

    Cons

    • No built-in cloud collaboration
    • Younger plugin ecosystem
    Visit Bruno Details and reviews
    How this score is calculated
    Editorial fit ×0.363
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Bruno a good Slumber alternative?

    Verified facts

    3 of 3 verified
    Open source
    Yes
    Checked Oct 24, 2026github.com(opens source in a new tab)
    Offline-first
    Yes
    Checked Oct 24, 2026usebruno.com(opens source in a new tab)
    Git-friendly
    Collections stored as files
    Checked Oct 24, 2026usebruno.com(opens source in a new tab)
  5. httpYac logo

    5. httpYac

    Best for: Developers who keep requests as .http files and want scripting and more protocols

    Open sourceWindows, macOS, Linux

    57.2

    score / 100

    Why switch from Slumber

    Runs .http request files from the CLI or VS Code.

    Pros

    • Plain .http files in your repo
    • Many protocols, including gRPC and MQTT
    • Same files run in VS Code and CI
    • Free, MIT licensed

    Cons

    • No form-based interface
    • Single maintainer
    • Docs assume technical comfort
    Visit httpYac Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is httpYac a good Slumber alternative?

    Verified facts

    4 of 4 verified
    License
    MIT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    Protocols
    HTTP, gRPC, WebSocket, MQTT
    Checked Oct 25, 2026github.com(opens source in a new tab)
    CLI
    Yes
    Checked Oct 25, 2026github.com(opens source in a new tab)
    CI use
    Yes
    Checked Oct 25, 2026httpyac.github.io(opens source in a new tab)

The best Slumber alternative for…

The highest-ranked app in this list for each need.

Posting logo

Best Slumber alternative for most people

Posting

A richer terminal interface with gRPC and GraphQL support.

ATAC logo

Best Slumber alternative for a free option

ATAC

A Postman-style terminal client that imports Postman collections.

Hurl logo

Best Slumber alternative for open source

Hurl

Plain-text request files with assertions, for CI tests.

Bruno logo

Best Slumber alternative for Mac

Bruno

A desktop app with collections stored as plain files.

httpYac logo

Best Slumber alternative for Windows

httpYac

Runs .http request files from the CLI or VS Code.

Posting logo

Best Slumber alternative for Linux

Posting

A richer terminal interface with gRPC and GraphQL support.

Slumber alternatives: common questions

What is the best alternative to Slumber?

Posting ranks first right now. A richer terminal interface with gRPC and GraphQL support. ATAC and Hurl follow it in our ranking.

Is there a free alternative to Slumber?

Yes. Posting (open source), ATAC (open source), Hurl (open source) and Bruno (open source) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to Slumber?

Yes: Posting, ATAC, Hurl and Bruno, plus 1 more in the list above.

Which Slumber alternatives work on Linux?

Posting, ATAC, Hurl, Bruno and httpYac run on Linux.

Why do people switch from Slumber?

The complaints we hear most: collections are edited as YAML by hand; HTTP only, no gRPC or WebSockets; small volunteer project.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces Slumber, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.