3,030 tools
Free planSEO tooling
Checkbot is a Chrome extension that crawls hundreds of pages to flag SEO, speed, and security issues such as broken links, duplicate titles, invalid HTML, and mixed content against published web best-practice guides.
Free planStatic analysis
The Checker Framework augments Java’s type system with pluggable checkers that catch nullness, concurrency, regex, tainting, and other defects at compile time. It ships as open-source compiler plug-ins, documentation, and tutorials for writing custom checkers.
Free planMonitoring
Checkly is a monitoring platform for developers and agents combining synthetic browser and API checks, uptime monitoring, heartbeats, status pages, alerting, and AI-assisted root-cause analysis with monitoring-as-code via CLI, Terraform, and Playwright suites.
Free planPayments
Zoho Checkout lets businesses build branded hosted payment pages for one-time and recurring charges, embed or share them across channels, retry failed payments, and connect payment gateways with analytics and email notifications.
Free planDeveloper tools
Chhoto URL is a lightweight self-hosted URL shortener written in Rust with an Actix backend and SQLite storage. It supports custom aliases, expiring links, hit counts, notes, QR codes, a programmatic API, and tiny OCI container images for low-memory deployments.
Free planAssistant
Chibisafe is a self-hosted file vault and uploader written in TypeScript. It supports chunked uploads, a fast HTTP API, public or invite-only modes, user accounts, and shareable links so teams can run their own modern alternative to hosted file-sharing services.
Free planAssistant
CHICKEN is a mature Scheme compiler that emits portable C, supports R5RS and R7RS, and ships with an extension ecosystem called Eggs. It targets Linux, macOS, Windows, and many CPU architectures for developers who want a lightweight Lisp toolchain.
Free planOptimization library
Choco-solver is a free open-source Java library for constraint programming where users declare constraints on decision variables and the solver alternates filtering algorithms with search to find feasible solutions.
Free planVector database
Chroma provides open-source and cloud search infrastructure for AI with vector, full-text, regex, and metadata search backed by object storage. Chroma Cloud adds serverless scaling, SOC 2 controls, and usage-based billing for production workloads.
Free planCode
Chromatic is a UI testing and review platform from the Storybook team that captures visual, interaction, and accessibility snapshots in real browsers. It integrates with Storybook, Vitest, Playwright, and Cypress workflows to catch regressions, assign reviewers, and reduce flaky snapshot noise via TurboSnap.
Free planProductivity
Chrome Remote Desktop is Google’s free remote access service for securely connecting to your own computers or sharing your screen with others. The web experience lets you access a home or work machine from a phone, tablet, or another computer, or collaborate in real time without installing a separate remote-desktop suite.
Free tier unknownAssistant
Chronicle Labs offers an AI agent testing and validation platform that turns production data into staging environments for pre-launch evaluation. Teams connect tools, capture real conversations, replay production behavior in hours, and measure scenario coverage to catch agent failures before customers do.
Free trialCode
CICube is an AI DevOps observability platform focused on GitHub Actions that analyzes pipeline failures, CI costs, and slowdowns. Its Essential plan tracks repositories with AI recommendations, CubeScore metrics, alerts, and six months of retention.
Free planCode
CircleCI is a continuous integration and delivery platform for automating build, test, and deploy pipelines across Docker, Linux, macOS, Arm, and self-hosted runners. It targets AI-era software teams with credit-based compute, orb integrations, and autonomous validation workflows tied to Git hosts.
Free planEngineering
CircuitLab is a browser-based schematic editor and circuit simulator for analog and digital designs. Students, hobbyists, and engineers capture schematics, run simulations, and share designs without installing desktop tools.
Free planDevOps
Cirun provides managed self-hosted GitHub Actions runners on your own cloud accounts, supporting AWS, GCP, Azure, OCI, DigitalOcean, OpenStack, and on-prem targets. The site highlights GPU, ARM64, and macOS runners so teams can run CI workloads closer to their infrastructure at lower cost than default hosted runners.
Free planDevOps
Citrus is an open-source integration testing framework aimed at messaging applications and microservices.
Free planCode
ClackyAI is a vibe-coding platform that turns natural-language product ideas into deployable full-stack applications. It generates specs, frontend and backend code, admin panels, integrated payments and auth, Git sync, one-click deployment, and team collaboration so founders can ship monetizable MVPs without stitching separate no-code tools.
Free tier unknownAssistant
Clad is an AI support investigation layer that triages customer threads from Slack, Discord, Teams, and email, pulls analytics and backend context, and produces evidence-backed tickets with root cause and draft replies. Teams approve resolutions while Clad automates handoffs between support and engineering in about thirty minutes of setup.
Free planSecurity
ClamAV is the widely used open-source antivirus engine for detecting trojans, viruses, malware, and other threats. The project site distributes releases, documentation, and components such as a multi-threaded scanner daemon with command-line utilities and automatic signature updates.
Free planProductivity
Clappia is a no-code platform for building business apps with workflows, forms, and integrations without traditional development. The vendor targets operations teams that need custom internal tools, with pricing tiers based on submissions, workflow executions, and per-user seats.
Free tier unknownCode
Clari's revenue capabilities now live inside Salesloft's Predictive Revenue System, unifying pipeline inspection, forecasting, cadences, conversation intelligence, and AI agents on shared buyer signals. Revenue leaders use it to prioritize seller actions, expose deal risk, improve forecast accuracy, and orchestrate go-to-market workflows from one platform.
Free planCode
Claspo is an agentic popup and onsite widget builder for marketers and ecommerce teams. It provides CRO-oriented templates, gamification, personalization, A/B testing, Shopify and WordPress apps, and an AI agent trained on billions of onsite sessions to launch and optimize lead-capture and conversion campaigns.
Free planCode
ClassMind is an AI workspace for educators, students, schools, and districts to generate standards-aligned lesson plans, worksheets, quizzes, presentations, rubrics, and grading assistance. Teachers use 40+ tools plus the Hya assistant to cut prep time while aligning content to global curricula from the EU-hosted platform.
Showing 576 of 3,030 tools
Plan facts carry individual sources and check dates. Unknown values are excluded from required filters.