Written by the Apidog team. Apidog is mentioned at the end for teams. The fixes come first because most of the time they solve it, and the alternative prices were checked on September 8, 2026.
"Postman is slow" is one of the most common complaints in API-tool threads, and it is usually specific: the app takes a long time to open, a large workspace stutters, the response viewer struggles with a big payload, or a machine with 8 GB of RAM has no room left for anything else. Postman is an Electron app with a cloud-synced workspace, and both of those choices carry weight. Before switching, try the fixes; if they do not help, the lighter clients below are ready.
Fixes that usually help
- Clear the cache and app data. Stale sync data is the most common cause of a slow start. Our guide: how to clear the Postman cache.
- Trim the workspace. Archive collections you no longer run. Every open collection is loaded into memory.
- Turn off sync for local work. Lightweight mode or signing out for local-only collections removes the sync overhead.
- Limit response size. Large responses lock the viewer; set a maximum response size in settings. Related: the maximum response size error.
- Close the console and the runner tabs you are not using; they keep rendering.
- Check the version. Regressions get fixed; an older build may be the fastest for your machine. See downloading older Postman versions.
If the app is still heavy after that, it is the architecture rather than your setup, and the question becomes which lighter client to use.
Lighter clients compared
| Client | Runtime | Account | Startup weight | Price |
|---|---|---|---|---|
| Hoppscotch | Browser tab (desktop app optional) | No | A tab | Free; Organization $6 |
| Bruno | Electron, local files | No | Light workspace, no sync | Free; Pro $6 |
| Yaak | Tauri desktop, local | No | Light | Free personal; $79/year commercial |
| HTTPie CLI | Terminal | No | None | Free |
| Posting | Terminal UI | No | None | Free |
| Restfox | Web or desktop | No | Light | Free |
| Thunder Client | VS Code extension | No | Inside VS Code | Free; Starter $3 |
| Apidog | Desktop or web | Yes | Comparable to Postman; platform features included | Free for 4; Basic $9 |
1. Hoppscotch: nothing to install
A browser tab is the lightest possible client. Hoppscotch (MIT) has an uncapped free plan and a desktop app for localhost work.
2. Bruno: no sync, no account, files on disk
Bruno is also Electron, but without a cloud workspace to sync it opens fast and stays fast; collections are .bru files. MIT, free.
3. Yaak: a small native binary
Yaak is built on Tauri rather than Electron, which usually means a smaller install and lower memory. Local-first, MIT.
4. HTTPie and Posting: the terminal
Nothing is lighter than a terminal. HTTPie for quick checks, Posting for a keyboard-driven UI with YAML-stored requests.
5. Restfox: minimal by intent
An MIT web or desktop client that does one thing.
6. Thunder Client: inside the editor you already have open
No extra app at all; the trade is a paywall on Git storage, protocols, scripting, and the CLI.
What a lighter client costs you
Speed is easy to buy if you are one person. The tools above are fast because they do less: no live collaboration, no hosted mock a frontend colleague can hit, no published docs, no scenario tests with data tables and database checks, and no CI runner beyond a CLI. For a solo developer that is fine. For a team, the weight you removed from your laptop reappears as spreadsheets, exported files, and a docs site someone maintains by hand.
For teams: Apidog
Apidog is a desktop and web app comparable in footprint to Postman, so it is not the answer to "I want a lighter client". It is the answer to "I want to leave Postman without losing the platform": four users free with unlimited runs and mocks, spec-first design so mocks, tests, and docs update together, a self-hosted runner for private services, and pm.* scripts that run after import. If the reason you are here is that Postman got expensive as well as heavy, read Apidog vs Postman and what switching from Postman actually costs.
Choosing
- Solo, want the lightest thing: Hoppscotch in a tab, or HTTPie in the terminal.
- Solo, want files in Git: Bruno.
- Solo, want a small native app: Yaak.
- Team, want to keep mocks, docs, and tests: Apidog.
The full field is in Postman alternatives in 2026; the client-only list is in the best API clients.
FAQ
Why is Postman slow? Most often a large synced workspace, a stale cache, or big responses in the viewer. Clearing the cache and archiving collections fixes the majority of cases.
What is the lightest Postman alternative? A terminal client (HTTPie or Posting) or Hoppscotch in a browser tab.
Is Bruno faster than Postman? Bruno has no cloud workspace to sync, so it typically opens and stays lighter, though both are Electron apps.
Is Apidog lighter than Postman? No; it is a comparable desktop app. Its advantages are price, the four-user free plan, and the spec-first platform, not footprint.
Checked on September 8, 2026.
