Free planBurp Suite
Software & utilities
Burp Suite is PortSwigger's platform for web application security testing.
- Free
- API unknown
- Checked Oct 4, 2026
1,919 tools
Software & utilities
Free plan
Free to startCabal
Software & utilities
Cabal helps founders and operators write, personalize, and send investor updates with modern mail merge from their own inbox. Teams collaborate on drafts, track opens and clicks, and reuse investor lists for LP updates and other bulk communications.
- $19.00/mo · starting plan
- API unknown
- Checked Oct 4, 2026
Free to startCabot
Software & utilities
Cabot is a self-hosted monitoring and alerting service for websites and infrastructure. It watches Graphite metrics, Jenkins jobs, and HTTP endpoints, groups triggers into services and instances, and notifies teams by phone, SMS, HipChat, or email when something breaks.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free planCacheFly
Software & utilities
CacheFly is a specialist content delivery network focused on high-stakes streaming, game launches, and CTV ad delivery. It offers pay-as-you-go and business tiers with features such as cache shielding, image optimization, object storage, and dedicated support for media-heavy workloads.
- $300.00/mo · starting plan
- API unknown
- Checked Oct 4, 2026
Free planCacher
Software & utilities
Cacher is a cross-platform code snippet manager for developers and teams. It organizes labeled snippets, syncs with editors such as VS Code and IntelliJ, integrates with GitHub Gist and Slack, and offers team libraries with reviews and role management on higher tiers.
- $9.99/mo · starting plan
- API unknown
- Checked Oct 4, 2026
Free planCacoo
Software & utilities
Cacoo is Nulab's online diagramming and whiteboarding tool for teams. It supports real-time collaborative diagrams, templates, in-app video chat, revision history, and integrations with products such as Backlog, Slack, and Google Drive.
- $6.00/mo · starting plan
- API unknown
- Checked Oct 4, 2026
Free planCadabra
Software & utilities
Cadabra publishes long-form articles on startup engineering culture, tribal knowledge, dependency risk, and product constraints under the tagline “Conjure smarter software, like magic.” The site reads as an editorial brand and newsletter-style resource rather than a downloadable SaaS console.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCakePHP
Software & utilities
CakePHP is an open-source PHP web framework for rapid MVC application development. It provides conventions, scaffolding, ORM tooling, middleware, and long-term releases so teams can build and maintain web apps with less boilerplate.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCalagopus
Software & utilities
Calagopus is an open-source game server management panel written in Rust for hosting game servers in isolated Docker containers. It targets high performance, security hardening, extension APIs, collaborative file editing, and migration paths from Pterodactyl-compatible eggs.
- Free
- API available
- Checked Oct 4, 2026
Free planCalcForge
Software & utilities
CalcForge offers free and premium civil and structural engineering calculators—beams, frames, geotech, tunnels, and more—plus certification courses on Python and AI for construction. Engineers run calculations in the browser with diagrams, PDF export, and optional lifetime access to advanced tools.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCalculatorLists
Software & utilities
Calculator Lists hosts a large library of free online calculators for finance, health, math, and everyday conversions with explanatory guides. Visitors run calculations in the browser without registration, including scientific, mortgage, BMI, and specialty tools.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCalendar Icons Generator
Software & utilities
Calendar Icons Generator is a free web app that designs a calendar icon template and exports 365 date-stamped PNG icons for a chosen year. Customizations include colors, fonts, header formats, and previews before downloading a ZIP archive.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCalibre
Software & utilities
calibre is a cross-platform e-book management application for organizing, converting, and reading digital books. The project site provides downloads, documentation, community involvement links, and donation support for ongoing development.
- Free
- API unknown
- Checked Oct 4, 2026
Free tier unknownCalibrex
Software & utilities
Calibrex sells a wearable strength-training coach that tracks bar speed, reps, and power during lifts and feeds real-time guidance through a mobile app. The hardware targets lifters, coaches, and university programs who want velocity-based training feedback.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free tier unknownCallBooker
Software & utilities
Product marketing and pricing pages were not readable without an allowed region.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free tier unknownCamp
Software & utilities
camp. is a screenshot utility marketed as smarter screenshots with a simple download-focused landing page. The public site is a lightweight client-rendered experience built for capturing and organizing screen content.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free planCanary Tokens
Software & utilities
Canarytokens is a free Thinkst tool for planting digital tripwires across your environment. When an attacker triggers a token, the service notifies you, helping teams detect breaches early through honeytokens embedded in files, URLs, and credentials.
- Free
- API unknown
- Checked Oct 4, 2026
Free planCandy
Software & utilities
It supports multiple rooms, private chats, notifications, moderation actions, and a plugin system, and is designed for deployment against your own XMPP server with HTTP binding.
- Free
- API unknown
- Checked Oct 4, 2026
Free tier unknownCanvas LMS
Software & utilities
Canvas by Instructure is a learning management system for delivering courses, assessments, and credentials across K-12, higher education, and workforce training. It connects teaching workflows with Mastery assessments, Studio media, analytics, and an partner ecosystem.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free planCapacitor
Software & utilities
Capacitor is Ionic’s open-source native runtime for shipping web apps as iOS, Android, and Progressive Web Apps.
- Free
- API unknown
- Checked Oct 4, 2026
Free trialCapture.dev
Software & utilities
Capture.dev is a browser bug-reporting toolbar that records screenshots, console logs, network requests, and user context in one click so teams can file complete tickets without back-and-forth. It supports annotations, video feedback, customer capture links, and integrations with Slack, Linear, Jira, Asana, ClickUp, Trello, and Zapier.
- $29.00/mo · starting plan
- API unknown
- Checked Oct 4, 2026
Free tier unknownCareerGo
Software & utilities
CareerGo helps job seekers in African markets build ATS-friendly CVs and matching cover letters. Users upload an existing CV or start fresh, paste a job advert to highlight relevant skills, strengthen bullet points, and download Word or PDF outputs with local payment options such as M-Pesa and mobile money.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free tier unknownCare Weather
Software & utilities
Care Weather designs and operates small weather satellites to improve global wind and disaster forecasting. The company is building the Veery scatterometer mission to measure ocean surface winds more frequently for fresher forecast inputs.
- Not listed
- API unknown
- Checked Oct 4, 2026
Free planCarpoolear
Software & utilities
Carpoolear is an Argentine carpooling platform where drivers and passengers share trips, search by origin and destination, rate each other, and install a progressive web app for mobile notifications with privacy controls over who can join a ride.
- Free
- API unknown
- Checked Oct 4, 2026
Showing 504 of 1,919 tools
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