Top 12 Open-Source Alternatives to Assertible

Assertible

Assertible software provides you with a simple and quick way to monitor your web services. It comes with automated QA tools that users can utilize to test and monitor their web services on different platforms and environments.

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Product categories

APIs API Tools Developer Tools API API Testing Developer APIs API Clients API Design API Management API Observability Automated Docs Automated Testing

Summary

The top open-source alternatives to Assertible are Hoppscotch, MockServer, and Checkly. One of the criteria for ordering this list is the number of mentions that products have on reliable external sources. You can suggest additional sources through the form here.

Hoppscotch Landing Page
1

Hoppscotch

Open source API development ecosystem
Pricing:
- Open Source
- Freemium
- Free Trial
#Productivity #API Tools #Developer Tools 102 social mentions
MockServer Landing Page
2

MockServer

Easy mocking of any system you integrate with via HTTP or HTTPS.
Pricing:
- Open Source
#API #API Tools #Developer Tools 4 social mentions
Checkly Landing Page
3

Checkly

Fresh API monitoring and Site Transaction Monitoring. From one great dashboard.
Pricing:
- Open Source
#API Tools #Monitoring Tools #Uptime Monitoring 11 social mentions
Bearer Landing Page
4

Bearer

Bearer is an open source, fast and accurate static application security testing (SAST) tool that analyze your source code to discover, filter and prioritize security and privacy risks.
Pricing:
- Open Source
- Freemium
- Free Trial
#Security #Security & Privacy #APIs
Postman Landing Page
5

Postman

The Collaboration Platform for API Development
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 30 social mentions
Webhook.site Landing Page
6

Webhook.site

Instantly generate a free, unique URL and email address to test, inspect, and automate (with a visual workflow editor and scripts) incoming HTTP requests and emails.
Pricing:
- Open Source
- Freemium
- $14 / Monthly
#API #Sales Workflow #Data Integration 86 social mentions
StopLight Landing Page
7

StopLight

Stoplight is an API Design, Development, and Documentation platform that enables consistency, reusability, and quality in your API lifecycle, all with an easy, enjoyable developer experience.
Pricing:
- Open Source
- Freemium
- Free Trial
#API #API Tools #API Management 33 social mentions
Insomnia REST Landing Page
8

Insomnia REST

Design, debug, test, and mock APIs locally, on Git, or cloud. Build better APIs collaboratively for the most popular protocols with a dev‑friendly UI, built-in automation, and an extensible plugin ecosystem.
Pricing:
- Open Source
#API #API Tools #Developer Tools 134 social mentions
GoReplay Landing Page
9

GoReplay

GoReplay is an open-source tool for capturing and replaying live HTTP traffic into a test environment.
Pricing:
- Open Source
#Automated Testing #Testing #Developer Tools 1 social mentions
Optic Landing Page
10

Optic

Automate routine programming
Pricing:
- Open Source
#API Tools #Web Service Automation #Developer Tools 1 social mentions
Firecamp Landing Page
11

Firecamp

Firecamp is a modern client for Real-time, GraphQL, REST and other 15+ routine tech stacks and platforms.
Pricing:
- Open Source
#API Tools #Developer Tools #APIs 5 social mentions
Treblle Landing Page
12

Treblle

End to End APIOps Platform
Pricing:
- Open Source
- Freemium
- Free Trial
- $25 / Monthly (For 1 Workspace, 1 API, 250,000 Requests / mo)
#API Tools #Error Tracking #Realtime Backend / API 28 social mentions