What HTTP Toolkit does

HTTP Toolkit, operated by Toolshed Labs SLU, is an open-source HTTP(S) debugging and inspection tool used by developers to intercept, inspect, modify, and mock network traffic during application development and testing. The product is delivered as a cross-platform desktop application (Windows, macOS, Linux) built on the Electron framework with the Monaco code editor, providing a graphical interface for managing intercept rules, breakpoints, rewriting, and automated mocking across browsers, mobile devices, backend services, and command-line tools. The application has been in continuous development for 8+ years and serves a registered developer community exceeding 1.3M users, with 168 open-source contributors and 11K+ GitHub stars attesting to community-driven adoption.

The business model is freemium and product-led. The core product is free and open-source, distributed via GitHub and the company website, while a paid Pro tier unlocks advanced functionality (advanced rewriting, mocking, automation, and collaboration features). The company reports a team of 1-10 employees, has not raised disclosed external funding, and operates from an entity in Spain with development activity tied to its founder Tim Perry. Go-to-market is entirely self-serve, relying on organic developer adoption, community word-of-mouth, and open-source visibility rather than enterprise sales motion. No enterprise contracts, named customer logos, or segment-mix data are publicly disclosed.

Name

HTTP Toolkit

Legal name

Toolshed Labs SLU

Website

https://httptoolkit.tech

Company type

Private

Founded year

2016

Operating status

Operating

Headcount range

1–10 employees

Short description

HTTP Toolkit (Toolshed Labs SLU) is an open-source, cross-platform HTTP(S) debugging tool that lets developers intercept, inspect, and modify network traffic. It serves 1M+ developers via a freemium model with a paid Pro tier, operated by a team of 1-10.

Ownership category

akta.pro rank

Product category

Developer Tools

NAICS

Computer Systems Design and Related Services (54151), Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services (51821)

SIC

Services-Computer Programming, Data Processing, Etc. (7370), Services-Prepackaged Software (7372)

akta.pro primary industry

API Documentation & Developer Portals (BPAMAOAH)

akta.pro secondary industries

Testing, Simulation & Local Dev Environments (testnets, forks, fuzzing, CI) (FSAPABAG), Packet Brokers & Network Traffic Visibility (TAPs, NPBs) (HDADABAM)

Keywords

• HTTP debugging tools
• Network traffic interception
• API testing software
• Open source developer tools
• Cross platform proxy

Headquarters

HQ city

Tehran

HQ country

Iran

HQ region

Middle East

Markets served

GTM type

B2C

Offering type

Software

Cost components

Technology or R&D, Personnel, Infrastructure, Marketing or Sales, Operations

Revenue model

1. Freemium with Pro Features: HTTP Toolkit offers a free open-source version with core interception and debugging capabilities. Premium Pro features include automated rewrite rules, rule organization and sharing, request transformation, and advanced mocking capabilities. Revenue is generated through Pro subscriptions unlocked via in-app upgrade.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels7 records

Core offering

HTTP Toolkit is an open-source, cross-platform application for intercepting, inspecting, debugging, and modifying HTTP(S) traffic from browsers, mobile apps, Docker containers, and backend processes on Windows, macOS, and Linux. It provides one-click capture, breakpoint-based live editing, a built-in HTTP client, and Pro-tier automated rewrite rules, mock responses, and request/response transformation.

Product overview

HTTP Toolkit is a single unified open-source product for debugging, testing, and building with HTTP, available as platform-specific versions for Windows, Mac, and Linux. The core product provides intercept, inspect, breakpoint, and send capabilities for capturing and analyzing HTTP traffic. A Pro tier adds Modify features including automated rewrite rules, mock responses, and request/response transformation. Related projects include Will it CORS? for CORS debugging and Frida Interception Scripts for mobile instrumentation.

Differentiator

Problem solved

Functional benefit

Quantifiable outcome

• 1M+ users worldwide rely on HTTP Toolkit for HTTP debugging and testing

Segments3 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature6 records

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Fiddler (Telerik/Progress): Established HTTP debugging proxy for Windows, originally by Eric Lawrence and now maintained by Telerik/Progress. HTTP Toolkit explicitly competes here — its alternatives pages target Fiddler users migrating away.
• Charles Proxy: Commercial cross-platform HTTP debugging proxy widely used by developers. HTTP Toolkit positions its one-click interception and modern UX as direct improvements over Charles's manual proxy configuration.
• Proxyman: Native macOS HTTP debugging proxy with similar intercept, inspect, and SSL proxying capabilities. Comparable target audience (mobile and web developers) and overlapping feature set including rule-based rewriting.
• mitmproxy: Open-source, console-based HTTPS intercepting proxy with a Python scripting API. Targets the same developer debugging use case as HTTP Toolkit, particularly backend and security engineers comfortable with terminal workflows.
• Insomnia: Cross-platform API client for designing, testing, and debugging REST and GraphQL APIs. Overlaps with HTTP Toolkit's 'Send' capabilities and shares the same freemium developer-tool GTM.
• Requestly: Browser-based and desktop tool for intercepting, modifying, and mocking HTTP requests. Closely competes on the rewrite/mock and rule-sharing features that form HTTP Toolkit's Pro tier.

Broad incumbents

• Postman: Dominant API client and collaboration platform with broad testing, mocking, and documentation features. While primarily an API client rather than an interceptor, it competes for the same developer-tooling wallet share and adjacent Pro/team monetization motion.
• Chrome DevTools (Google): Free, browser-bundled network inspection and HTTP debugging tool. HTTP Toolkit's alternatives pages explicitly target Chrome DevTools users seeking capabilities beyond the browser, like system-wide or mobile app interception.

Emerging players

• Burp Suite (PortSwigger): Security-focused HTTP interception and testing suite. Targets a different primary persona (security researchers) but overlaps in HTTP interception capability for QA, red-teaming, and API security testing use cases.
• Hoppscotch: Open-source API development ecosystem with REST, GraphQL, and WebSocket testing. Shares the open-source, developer-first, and freemium monetization model with HTTP Toolkit, competing for the same community of API builders.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xtwitter.com/httptoolkit
• GitHubgithub.com/httptoolkit

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about HTTP Toolkit