Vayu

Atharva Kusumbia·athrvk.Vayu

Open-source API client with a native C++ load-testing engine - Postman-style requests and k6-level load tests in one local app.

Vayu is a free, open-source desktop app for Windows, macOS, and Linux that combines a full REST and GraphQL request builder - with collections, environments, and scripting - and a high-throughput load tester powered by a C++20 engine, with all data staying on your machine.

winget install --id athrvk.Vayu --exact --source winget

Latest 0.35.0·September 21, 2026

Release Notes

0.35.0 - 2026-09-21 A Demo API tile for a first run with an empty workspace, plus fixes to the Import dialog's tab strip, a Monaco editing bug in variable popovers, and the scripting docs for pm.request.body. Added

  • The Launcher now shows a Demo API tile below its action grid while your workspace has no runs yet. It sends a real request against a public demo endpoint, so there's something to see execute before you write your own - it goes away once you've run anything. Fixed
  • Editing a variable in a token's popover and pressing Enter to commit could split the line underneath it in the editor instead, because focus returned to the editor before Enter's own newline action landed.
  • The Import dialog's File/URL/Paste tabs rendered at the smaller size meant for a tab strip nested inside a section, not a dialog's own top-level navigation.
  • The scripting docs and completions for pm.request.body didn't say that assigning it directly (pm.request.body = ...) replaces the whole object - a later pm.request.body.raw read in the same script then returned undefined instead of the string just set.

Installer type: nullsoft

x64—7FB8BE2765FEB121B508FF5B5B3AD15EE73DCD535E8C482EF5B114D0A429F595

Details

Homepage
https://github.com/athrvk/vayu
License
AGPL-3.0
Publisher
Atharva Kusumbia
Support
https://github.com/athrvk/vayu/issues
Copyright
Copyright © 2026 Atharva Kusumbia
Moniker
vayu

Tags

apiapi-clientapi-testingbenchmarkdeveloper-toolsgraphqlhttpinsomniaload-testingperformancepostmanrest

Older versions (28)

0.33.0
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0.32.1
x64—E92E4AAFD0C056029E5F767F4C664A45601E6FA774A042939D189F184AC8125A
0.32.0
x64—3176E8B78A5573E348994C5212C90029BBB9E6DACC1C20322806A01AFDC373C2
0.31.0
x64—92EE991EC785061AC518C96C31BA5EA2BA53E19509B8FEE09A26702517D308C8
0.30.0
x64—A9257EE98CA8091CD7A3DDC127CC5638A07B79BD82827AB6FF08BAA18D2C4B5B
0.29.2
x64—2E7A919B54CD7EDF58E0694728A61730A70DFED894221DD9B69ADA6928614D56
0.29.1
x64—109F8D2628BB598CEB00DC85502139C5174D05BB42A4C2BB6499F363DB7D9284
0.29.0
x64—CC03DE57F1AC29CB154522C876FF8C57C8588D464195E626B1358AB19379641B
0.28.0
x64—9F988227B26E68ABD12B3B66850F1B608A16D470325A27463E7A198B6E51BDA4
0.27.0
x64—37D61CA85EE04BD7789CE82A606EC58EBD9418319693F6866802FCCC1181F1CE
0.26.0
x64—5F7CE3EF4E50B79838AA18161072C3BE021BF7240BBE08E158F30DD28FC64B17
0.25.0
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0.24.0
x64—F6A4CE7F84D56BA9956701458E3C9B937073D9137685629EBC665ED8ADD2251D
0.23.0
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0.22.1
x64—FD407E45B1E0BC230327F8F729709CC9C8B9A1627A028001D4F33CE5B9ACD3D0
0.22.0
x64—1AC481113D3E4D375B92F116194C11DCB05DBAC90853817F59E6307EAE0A03F8
0.21.0
x64—C1B4A8B58F802FB2EB9463A3AE8DFB6DDC896C5A053E877AA20E92B9FD379629
0.20.0
x64—3094F16FCA819B4A9A30BE091E9711D196C24912515A808582911CC23C0260B9
0.19.0
x64—C4D5AD0007521C1889A0DE9293EC7B40F64D66A8FE55C62D180821236ADEEBB0
0.18.1
x64—20AC9ECBA3731A45843410E619AD96A95D07D1DB3632BB21C98F8D9BFE3D04AA
0.18.0
x64—99494BB10B4390E6ACC8FA5993E6617E6BC98A7ADBCC755160A442D4BD0547EC
0.17.1
x64—18DA33CCED6880E316049564D73A0C979F7DD82EF276273ED3B757125CDB1D77
0.17.0
x64—F6902B0D6C6B86EE595E9084FB75E8BE26C4B6B22C15622D43C0B080547E754C
0.16.0
x64—816B67A17DB3398B91C5A812C54112C838204524F71C44735CBC7F8ACAE4C50D
0.14.0
x64—1F313CFB52A1A34080BB653C7EC00363E217FB0BE754F056EBD9A81D21CAD5B3
0.13.0
x64—57F91C79807FF20F74C623770876B97B0553D1066017A26510D836305A036ACC
0.12.0
x64—6A0466F657588D1A3D47FB6F4EF43FF941A3FA20FD84CEEC72964EB4437C5199
0.10.0
x64—0C5B513B79AD7F2B676F81332094C797E210C2CDCD5CD74E16C7ED3ACCE294CB