Products starting with O
41 products whose name starts with O, each with a one-line description and the ranking it sits in.
O3DEApache 2.0 multi-platform 3D engine from the Open 3D Foundation · #9 in best game engines
OakMeditation and breathing app with guided sessions, a course and a timer · #8 in best meditation apps
OBS StudioOpen-source screen recording and live streaming software · #1 in best screen recorders
ObservableCollaborative notebooks for data analysis, visualization and custom apps · #10 in best data science notebooks
ObsidianLocal-first Markdown notes with links between notes · #1 in best note-taking apps
Oden TechnologiesAI analytics and front-line software for manufacturing optimization · #7 in best OEE and production monitoring software
OdooOpen source business apps with an accounting module and self-hosting · #9 in best accounting software
Odoo MaintenancePreventive and corrective maintenance inside the open-source Odoo suite · #8 in best CMMS and maintenance software
OkularFree document viewer from KDE with annotation and signatures · #9 in best PDF editors
OllamaRun open AI models locally with a simple command-line install · #1 in best local LLM runners
OmniFocusTask manager for Apple devices with perspectives and reviews · #4 in best to-do list apps- OmnisendEmail and SMS marketing platform built for ecommerce stores · #5 in best email marketing software
One Up On Wall StreetPeter Lynch's case for individual stock picking from company research · #11 in best personal finance and investing books
OneSpan SignEnterprise e-signature platform with identity assurance and smart forms · #7 in best e-signature software
ONLYOFFICEOffice editors for desktop, the web and self-hosted document servers · #4 in best office suites
OnshapeCloud CAD with real-time collaboration in the browser · #9 in best 3D modeling software
OPC FoundationStandards body behind OPC UA, the open interoperability standard for industry · #4 in best industrial technology news and references
OPC TurkeyKepware OPC software distributor and support in Turkey · #5 in best OPC and industrial connectivity software
Open edXOpen-source platform for running online courses · #10 in best online course platforms
Open LibraryOpen, editable book catalog with free library books and reading goals · #2 in best book tracking and discovery apps
Open Music TheoryFree, openly licensed online textbook on music theory · #1 in best music theory books- open62541Open-source C library that implements the OPC UA standard · #8 in best OPC and industrial connectivity software
- OpenAI Agents SDKLightweight MIT-licensed Python SDK for multi-agent workflows · #8 in best AI agent frameworks and tooling
OpenAI CodexOpenAI's open-source coding agent for the terminal · #8 in best AI coding assistants- OpenCartFree open-source PHP shopping cart with a large extension marketplace · #11 in best ecommerce platforms
OpenCATSOpen-source applicant tracking system and recruiting CRM · #10 in best applicant tracking systems
OpenCodeOpen-source AI coding agent for the terminal, IDE and desktop · #4 in best AI coding assistants
openHABVendor-neutral open-source automation software for your home · #4 in best home automation platforms
OpenPLC EditorOpen-source PLC programming IDE for the OpenPLC Runtime · #4 in best PLC programming software
OpenProjectOpen-source project management with Gantt charts and agile boards · #11 in best project management software
OpenReviewOpen peer review platform hosting conference reviews and submissions · #6 in best machine learning research resources
OpenShotFree, open-source video editor for Linux, macOS and Windows · #9 in best video editing software
Oracle Cloud InfrastructureCloud platform with Always Free services and a US$300 starter credit · #10 in best cloud hosting platforms
Oracle SQL DeveloperFree integrated development environment for Oracle databases · #10 in best database management tools
OrangeHRMOpen-source HR management system you can host yourself · #8 in best HR and payroll software- ORDRDevice security for IT, IoT, OT and medical assets with segmentation · #10 in best OT security platforms
osTicketOpen-source support ticket system you host on your own server · #11 in best customer support software
OtterMeeting transcription and notes with apps and a Chrome extension · #3 in best speech-to-text and transcription software
Our World in DataResearch charts and data on global topics, under CC BY · #1 in best open data portals and dataset libraries
OutlookEmail, calendar and tasks from Microsoft for Windows and Mac · #3 in best calendar apps
OvercastPodcast player for iPhone, iPad and Apple Watch with Smart Speed · #4 in best podcast apps