OpenHuman Atlas is a 3D interactive anatomy and surgery learning platform that allows users to explore, isolate, and inspect anatomical structures. It includes tools for practicing procedures, creating medical visuals, and reviewing medical imaging locally.
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OpenHunts is a product launch platform designed for indie makers and tiny startups to launch tech products, gain instant visibility, receive community feedback, and earn high domain rating backlinks. It serves as an alternative to Product Hunt, focusing on boosting SEO visibility and reaching early adopters.
OtherFree plan
OpenInbox provides a free temporary email inbox service that creates a private disposable inbox instantly without registration. It supports real-time email delivery, OTP code detection, attachments up to 25 MB, and offers developer API, webhooks, and custom domains for extended use.
Email & communicationFree plan
OpenKap is a free, open source screen recording tool designed for product teams. It allows instant screen recording via a Chrome extension, sharing through instant links, and supports AI-powered transcriptions and collaboration, with an option for self-hosting to keep data on your own servers.
OpenPreview is a SaaS tool that enables users to design a single Open Graph image template which dynamically renders unique previews for every page on a website. It automates the creation of branded, dynamic link previews to increase click-through rates without requiring code or redeployment for updates.
OpenShorts is an open source AI clip generator that converts long videos such as podcasts, webinars, and interviews into vertical 9:16 clips suitable for TikTok, Instagram Reels, and YouTube Shorts. It offers both a self-hosted free version under the MIT license and a cloud-hosted service starting at $12/month with faster processing and no watermark.
Video & streamingOpen source
OpenTweet is a posting platform for X (formerly Twitter) that enables AI agents and users to post, schedule, and manage content across X, Bluesky, and LinkedIn without requiring an X developer account. It offers a hosted MCP server, REST API, and CLI tool, along with AI-powered tweet generation and cross-posting capabilities.
OpinionArk is customer feedback software that provides a website feedback widget, feature request board, feature voting, bug reports, and a public roadmap. It enables businesses to collect, manage, and showcase customer feedback with no coding required and setup in minutes.
OpsKitty is a website monitoring and SEO tools platform that monitors websites and APIs for uptime, performance, and SSL health from 29 global regions. It includes 33 free SEO tools and provides real-time alerts and detailed reports to improve website performance and user experience.
Developer toolsFree plan
OpusDeck is a high-performance operating system designed for luxury service professionals to create interactive, cinematic proposals that replace traditional PDFs. It uses generative AI to transform raw documents into visually rich, emotionally resonant proposals with real-time client tracking and collaboration features.
Sales & CRMFree plan
Oracle Odds AI provides AI-based sports predictions for football, basketball, baseball, and more, publishing every pick with wins and losses for transparency. It offers a public record of prediction accuracy and tools to analyze matches, player props, and betting slips with confidence scores and explanations.
Orbiform is an AI-powered online form and survey builder that creates forms from natural language descriptions, collects responses, and analyzes them with AI insights and lead ranking. It supports classic and conversational form formats, real attribution tracking, and team collaboration features.
Orbit Money is a personal finance app that tracks expenses, holdings, cash flow, and invoices in one place. It supports multiple currencies and provides real-time syncing and financial insights through a responsive web app.
Orbitra is a B2B outbound sales platform that automates outreach across Email, LinkedIn, and WhatsApp using AI. It scrapes leads, writes personalized messages, sends campaigns, replies autonomously, and books calls, enabling sales reps to focus on closing deals.
Orchly.ai is an AI visibility and optimization platform designed to monitor brand presence across Google and AI search engines, uncover visibility gaps, and use AI agents to take action to improve search presence. It integrates data from multiple sources including Google Search Console, GA4, CMS, and AI engines to provide a unified dashboard for tracking AI and organic visibility, AI traffic, and shopping visibility.
Origano is a free recipe manager and meal planner that works in your browser, allowing you to organize recipes, generate weekly menus, and create grocery lists automatically. It supports importing recipes from URLs or photos and offers features like recipe books, family sharing, and hands-free recipe reading.
Originull is an AI-powered 3D workspace designed for brands and web creators to turn product images, prompts, and existing 3D assets into customizable, web-ready 3D experiences for ecommerce, marketing, and interactive websites. It offers a free browser-based editor to import, edit, optimize, and export 3D models without signing up, with paid Credits used for AI asset creation.
Osek.ai is an AI-powered SEO content audit tool that identifies semantic gaps, search intent mismatches, and SERP-driven improvements to help SEO teams optimize their content. It provides detailed analysis including content SEO, E-E-A-T, semantic gap analysis, and search visibility checks.
SEO & visibilityFree plan