Chapar
A fast, private and offline API client for your REST, gRPC, GraphQL and WebSocket services.
A fast, private and offline API client for your REST, gRPC, GraphQL and WebSocket services.
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Development and Tools
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Chapar is a practical fit for buyers evaluating Development and Tools, API service, and #API Testing tools.
- Who is it for?
- Backend developers who need to call REST, gRPC, GraphQL and WebSocket services from one desktop app, because Chapar supports all four and keeps data on the local machine.
- Pricing
- pay-per-use
Product information
What this product does
A fast, private and offline API client for your REST, gRPC, GraphQL and WebSocket services.
Sourced from chapar.rest
Works With
Platforms
- Web
- API
- iOS
Company & Maker
Who built Chapar?
- Product
- A fast, private and offline API client for your REST, gRPC, GraphQL and WebSocket services.
- Live since
- Feb 2024
- Founders
- Mohsen Mirzakhani
Some facts above are based on publicly available information and may have changed.
The maker hasn't published a public statement we can verify yet.
Problem Solved
What problem does Chapar solve?
- Keep requests and environments as YAML files you can commit to git
- Test REST, gRPC, GraphQL and WebSocket services from one native app
- Work offline with no account, no cloud sync and no telemetry
- Chain requests into test cases and run them in CI with chapar-cli
- Capture HTTPS traffic of apps and phones with the built-in proxy
Researched with AI · Data refreshed 2 hours ago · How we score
Full Report Access
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Chapar is a free, open-source desktop API client for macOS, Windows and Linux that sends REST, gRPC, GraphQL and WebSocket requests and keeps all data local. Developers, testers and teams use it to test APIs, script checks in Python and keep request files in git.
Who should use
Buyer-fit is derived from approved personas and use-case evidence. Search-volume noise stays labeled separately.
Best-fit workflows
- Developers can use Chapar to quickly test their APIs and improve development efficiency
- Test teams can use Chapar to quickly verify the correctness of APIs, saving time
- Security teams can use Chapar to detect security vulnerabilities in APIs and enhance system security
- Sends gRPC calls from imported proto files to test a service method.
- Runs a Python post-request script that asserts on a JSON response field.
- Executes saved API test cases in a CI pipeline with chapar-cli.
Pricing reality
Vendor stated
Free and open source under the BSD 3-Clause license, with a Sponsor option and no paid plan listed.
Actual cost
You can use and modify it at no cost; help comes from the open-source project, not a paid contract.
Hidden costs
3 hidden cost warnings — unlock to view
Pricing reality
Last updated Oct 2026
Starting price
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General buyer tips
Common across software subscriptions, not findings about this product.
True cost for your case
LIVE ESTIMATEEstimated spend
--Starting price has not been verified from a linked pricing source yet.
Prices change often — confirm on the vendor's site before you buy.
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Engagement signals (30d)
Based on 6 linked public signals.
Mindber Activity Score™
Score locked
HOW THIS TOOL SCORES
Scores compare this tool with similar tools similar tools in Development and Tools. Use it to judge Innovation and Capability before you shortlist.
Innovation Index™
Is it new, different, and easy to understand?
Medium confidence (60%) - some sub-scores have thin evidence.What this means →
Functionality Score™
Does it cover the jobs buyers expect, and can it keep up?
Low confidence (30%) - some sub-scores have thin evidence.What this means →
Data sources
Traffic & search proof
Public view keeps the ratio story. Paid view unlocks exact monthly visits, full region coverage, and CPC-level keyword intelligence.
Latest traffic snapshot
Monthly visits
2.4K
Avg visit duration
00:00:19
Pages per visit
1.36
Bounce rate
36.27%
Traffic trend
Month-by-month visits from linked public traffic evidence.
Geography
Top regions
Exact monthly traffic is paid-only. Public view keeps percent share only.
Traffic sources
Source mix snapshot
Public view keeps the ratio snapshot. Minor channels stay behind the paid view.
FAQ
Only linked Q and A rows are shown. Empty FAQ data stays hidden.
Social mentions
Only linked public mention evidence is shown here.
Sources and methodology
Only evidence with a linked source record or explicit feature provenance is shown here. Data without provenance stays off the page.
COMMUNITY CREDITS
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