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Free tier unknownData
Centaur.ai delivers expert-in-the-loop data annotation by running competitions where specialists and AI models label text, image, waveform, and video datasets, then aggregates the best signals into production-ready training data.
Free tier unknownAssistant
Centauri AI builds AI-native products for institutional finance and developer workflows, including DataCube for document-to-data pipelines, coSlash for managing coding agents, and the open-source pyfilament task library. The site emphasizes extract-enrich-automate-deliver stages with SOC 2 Type II positioning and VPC deployment options.
Free tier unknownAssistant
Spring (formerly Centerya) is an AI-native residential real estate intelligence platform. It analyzes client conversations, listings, and market signals to match buyers with homes and automates lead engagement across SMS, phone, email, and chat.
Free trialAssistant
CentralComs provides AI phone and messaging agents for home-service trades that answer when crews are busy, book jobs on connected calendars, and follow up on leads. Agents use your services, prices, and booking rules, pass complex calls to staff with notes, and cover evenings and overflow calls twenty-four seven.
Free planAssistant
Centralize is a relationship workspace for enterprise deal teams. It auto-builds account maps from CRM, email, and call data, highlights missing stakeholders, surfaces warm paths, and adds Centra AI for next-best actions and drafted outreach.
Free trialCode
Centreon is an observability platform for IT infrastructure monitoring, log management, and digital experience monitoring. It offers alerting, dashboards, SLA views, SaaS or self-hosted deployment, hundreds of connectors, and modules for synthetic and real-user web performance testing.
Free planDeveloper tools
Centrifugo is an open-source real-time messaging server that delivers pub/sub events over WebSocket, SSE, HTTP streaming, WebTransport, and gRPC. Teams integrate it with any backend to power chats, live comments, multiplayer sync, and AI streaming with horizontal scaling via Redis, PostgreSQL, or NATS.
Free tier unknownVideo
Centropo builds AI video projects for real estate marketing. Its hello.centropo.com funnel promises a ready real-estate AI assistant, while centropo.com advertises video project workflows tailored to property listings.
Free tier unknownAssistant
CEOBuySell is a private operator desk for verified directors and controlling owners exploring company sales or acquisitions. Members submit anonymized I have or I want cards, receive manual matches, and only exchange names after mutual opt-in and an NDA.
Free planVideo
Cephadex turns PDFs, slides, documents, audio, web pages, and YouTube videos into flashcards, quizzes, worksheets, and study games. It adds spaced repetition, an AI tutor bot, and deck sharing for students, teachers, and creators.
Free trialImages
CEQUENS AI Agent is a conversational chatbot for customer engagement across messaging channels. It advertises multilingual support, multi-turn dialogue, contextual responses, and quick onboarding for industries using CEQUENS CPaaS infrastructure.
Free planAuthorization
Cerbos Hub is Cerbos’s control plane for writing, testing, and deploying authorization policies to PDPs across apps, APIs, and AI workloads. It adds playgrounds, CI validation, policy delivery from Git or Hub, and managed audit logging on top of the open-source Cerbos engine.
Free tier unknownAssistant
Cercli is an AI people platform spanning recruitment, HRIS, and payroll for companies hiring globally. AI agents Orin and Cera source and screen candidates, while HR modules cover records, documents, leave, time tracking, payroll, contractors, and employer-of-record services from one dashboard.
No free planAI inference
Cerebras offers ultra-fast AI inference through its Cerebras Inference service with developer, partner, and enterprise access paths. Public pricing emphasizes pay-as-you-go tokens and promotional credits rather than fixed monthly software tiers on the main pricing page.
Free planCode
Cerebrium is a serverless GPU platform for deploying real-time AI workloads such as voice agents, video models, and LLMs with sub-second cold starts and elastic scaling. Teams run Python apps on managed GPUs across multiple regions and pay for compute by the second rather than reserved capacity.
Free planAssistant
Cerebro is project and production management software for creative studios in marketing, architecture, VFX, and animation, combining tasks, files, reviews, and communications. Cloud pricing offers free Start tiers for tiny teams and paid Team, Studio, and Factory plans priced per user.
Free tier unknownAssistant
Cerenovus provides an AI-driven value creation platform for private equity, consulting, and advisory teams. Its MRI-for-business reviews scan contracts, system exports, and years of email to support operational due diligence, value creation planning, leakage analysis, portfolio reviews, and post-merger integration assessments.
Free planResearch
Certifier is a digital credential platform for designing, bulk-issuing, and verifying certificates and OpenBadge-compliant badges. Organizations automate branded delivery, recipient portals, and analytics while connecting issuance to CRM and LMS tools.
Free planBehavioral security
CertiLayer is behavioral security infrastructure that uses interaction signals and machine-learning models to distinguish human sessions from automated activity. Developers integrate SDKs or APIs, review a human-confidence score and apply configured policies or events without presenting a CAPTCHA on every visit.
Free trialCertificate monitoring
CertObserver monitors TLS certificates across inventories, Certificate Transparency logs, and live endpoints with expiry alerts, team roles, and a free CT search tool. Plans bundle inventory limits, CT monitors, endpoint checks, and Slack or email notifications.
Free planCertificate monitoring
CertPost monitors SSL/TLS certificate expiry and chain health for teams and agencies, sending alerts on renewal risk as public certificate lifetimes shrink toward 47 days. It supports hourly or daily checks, webhooks, DNS security signals, and client status pages on higher tiers.
Free tier unknownAssistant
Certus AI is a voice agent for restaurants that answers every phone call, takes orders, handles reservations, upsells guests, and pushes tickets into POS systems such as Toast, Square, Clover, and SkyTab. The site cites sub-second pickup, high order accuracy, multilingual support, and same-day setup.
Free planGeospatial
It pairs with Cesium ion services for hosted terrain and 3D Tiles but the library itself is free to embed.
Free planIDE
Cevelop extends Eclipse CDT into a C++ IDE with CUTE unit testing, refactorings, quick fixes, template visualization, and modern C++ upgrade helpers in a single downloadable package aimed at professional C++ developers.
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