FileCart

Vayu 0.50.0

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

filecart Windows Updated Nov 10, 2026
Download 117.67 MB · Vayu-x64.exe
39downloads
18this week
FreeFreeware
0reviews

About Vayu

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.

License: AGPL-3.0
Release info Update on Nov 10, 2026
Release notes 0.50.0 - 2026-11-10
Read before updating: Stop now ends a run at once, cutting off a teardown script's network calls; only one load or collection run can be live at a time; Vayu no longer replaces an engine that serves another data directory; and Settings now refuses proxy bypass entries, proxy passwords and pasted CA blocks that never worked (all under Changed). New: a send can be cancelled, streaming load runs show their events live and time the first event, Vayu names each cookie it drops, and the Dock shows an engine crash with a Restart button.
Added
- A send can be cancelled. While a request is sending, Cancel sits beside the Send button. The request stops at the engine too, History records it as stopped, and variable writes its scripts made before the cancel are kept (#3379, #3391).
- Streaming load runs show their events live. A Stream events card shows events so far, events per second and streams open while the run goes, for a single request and for a collection load run with a streaming step. The dashboard used to stay blank until the streams ended (#3297, #3310).
- Time to first event for streaming load runs. First byte ends at the response headers, so a gateway that answered at once and then thought read as fast. The Stream events card and the report now have a first event row (p50, p95, p99, max), and two budgets go with it: Time to first event p95 at most and Events per second at least (#3294).
- The Markdown and HTML report exports have a Stream section, as the JSON export already did (#3298).
- Vayu says when it drops a cookie. A cookie over the size limit, past the 150 a request can carry or past the 50 a response can set was dropped with no word. A warning above the response now names each one, in a plain send, a streaming send and a collection run's step. A collection load run reports a count (#3314, #3317).
- The Dock shows an engine crash. The status tooltip names the cause ("Vayu's engine was stopped by signal 9.") and a Restart button sits…
Related tags api api-client api-testing benchmark developer-tools
Listing datawinget

Reviews

No reviews yet. Be the first to review Vayu.

Used Vayu? Tell other visitors what you thought.

Log in to write a review

Other products by this publisher

Most viewed Windows Database Tools

  1. 1 Clarion viewer 2.52 This tool allow to read/open the Clarion tables on any computer. An application don't use any external libraries (no BDE, no ODBC, no ADO etc) You may see the full Clarion system information, table structure and data in grid. 24K
  2. 2 EMS SQL Manager for SQL Server 3.9 EMS SQL Manager for SQL Server is a high performance tool for Microsoft SQL Server database development and administration. SQL Manager works with any MS SQL Server versions from 7 to the newest one and supports the latest SQL Server features. 22K
  3. 3 DBF Viewer 2000 6.55 With DBF Viewer 2000 you can view, edit, sort, create, print and export dbf files to a variety of formats (DBF, TXT, CSV, Excel, HTML, XML, PRG, SQL, RTF) without using any packages. Unlike other similar programs, DBF Viewer 2000 is fast! 21K
  4. 4 DataNumen Access Repair 2.2 DataNumen Access Repair is a powerful Access recovery tool. It uses advanced technologies to scan the corrupt Microsoft Access databases and recover your data in them as much as possible, so to minimize the loss in file corruption. 18K
  5. 5 PHP DataGrid AJAX Enabled Web Control 8.2.7 PHP DataGrid (AJAX Enabled) script is a simple, innovative and powerful tool for generating data-bound grid control. It was specially designed for web developers. 18K
  6. 6 Universal SQL Editor 1.9.2.2 Intellisense enabled SQL editor for Oracle, DB2, SQL Server, Sybase, etc., with SQL formatter/beauifier, query result supports grouping, filtering, searching, and can also be exported to Excel spreadsheet or as a set of SQL statements. 16K
  7. 7 Excel-Mysql converter 3.0 convert MySql to Excel spreadsheets or convert any Microsoft Excel spreadsheets into MySQL utilizing easy to use Wizard style interface, Just follow the simple screens and let the wizard automatically do all the work .. 15K
  8. 8 xBaseView Database Explorer 11.0 Browse database Explorer style and other typical operations. Data export/import. Oracle, SQLAnywhere, PostgreSQL, Cache, SQL Server, Interbase, Firebird, Access, VFP, FoxPro, dBase, Clipper, Paradox, MySQL, SQLite, Borland CDS, XML, Excel, CSV, TAB. 15K
  9. 9 Data Loader 4.8 A simple yet powerful tool to Export, Import, Migrate and Convert data between different databases and delimited flat text CSV files. Supports Saving & Scheduling of Sessions and Repository. 14K
  10. 10 Altova MapForce Enterprise Edition 2017sp2 Altova MapForce 2017 Enterprise Edition is a graphical data mapping, integration, and ETL tool. Map any combination of XML, database, EDI, XBRL, flat file, Excel, JSON, and Web service, then convert data instantly or automate recurrent conversions. 14K

Most downloaded Windows Database Tools

  1. 1 Clarion viewer 2.52 This tool allow to read/open the Clarion tables on any computer. An application don't use any external libraries (no BDE, no ODBC, no ADO etc) You may see the full Clarion system information, table structure and data in grid. 3.6K
  2. 2 DBF Viewer 2000 6.55 With DBF Viewer 2000 you can view, edit, sort, create, print and export dbf files to a variety of formats (DBF, TXT, CSV, Excel, HTML, XML, PRG, SQL, RTF) without using any packages. Unlike other similar programs, DBF Viewer 2000 is fast! 2.9K
  3. 3 xBaseView Database Explorer 11.0 Browse database Explorer style and other typical operations. Data export/import. Oracle, SQLAnywhere, PostgreSQL, Cache, SQL Server, Interbase, Firebird, Access, VFP, FoxPro, dBase, Clipper, Paradox, MySQL, SQLite, Borland CDS, XML, Excel, CSV, TAB. 2.5K
  4. 4 Excel-Mysql converter 3.0 convert MySql to Excel spreadsheets or convert any Microsoft Excel spreadsheets into MySQL utilizing easy to use Wizard style interface, Just follow the simple screens and let the wizard automatically do all the work .. 2.4K
  5. 5 Data Loader 4.8 A simple yet powerful tool to Export, Import, Migrate and Convert data between different databases and delimited flat text CSV files. Supports Saving & Scheduling of Sessions and Repository. 2.3K
  6. 6 Universal SQL Editor 1.9.2.2 Intellisense enabled SQL editor for Oracle, DB2, SQL Server, Sybase, etc., with SQL formatter/beauifier, query result supports grouping, filtering, searching, and can also be exported to Excel spreadsheet or as a set of SQL statements. 2K
  7. 7 PHP DataGrid AJAX Enabled Web Control 8.2.7 PHP DataGrid (AJAX Enabled) script is a simple, innovative and powerful tool for generating data-bound grid control. It was specially designed for web developers. 2K
  8. 8 dbForge Studio for Oracle 4.5 dbForge Studio for Oracle is a powerful integrated development environment (IDE) which helps Oracle SQL developers to increase PL/SQL coding speed, provides versatile data editing tools for managing in-database and external data. 2K
  9. 9 DBScribe for SQL Server 1.4 Leadum DBScribe is a sql documentation tool for SQL Server. It supports a rich set of documentation styles, output formats (HTML, CHM, MS Word Document), wizard and command line interfaces, complete database schema documenting. 1.8K
  10. 10 DataNumen Access Repair 2.2 DataNumen Access Repair is a powerful Access recovery tool. It uses advanced technologies to scan the corrupt Microsoft Access databases and recover your data in them as much as possible, so to minimize the loss in file corruption. 1.8K