Browse Open Source Software Alternatives

Inference cloud serving hundreds of language and image models through an API, with fine tuning and GPU clusters, used by teams building applications on hosted models.

API gateway and developer portal run as a managed service, where teams add authentication, rate limits, billing and LLM or MCP traffic policies as code deployed from Git.

Communications platform with voice and SMS APIs, phone numbers and a contact center product, used by developers sending high volume messaging and building call flows into their applications.

Writing and scheduling tool for posts and threads on X and other social networks, aimed at creators who publish regularly.

Project management tool with boards, tables and custom fields for tracking tasks across teams, made by the company behind Clockify and aimed at small teams on tight budgets.

End to end testing service where AI agents exercise web and mobile apps like real users, running on each pull request and returning video, screenshots and network logs for failures.

In app feedback and bug reporting widget that captures screenshots, replays sessions and collects console logs, giving product teams reproducible reports straight from users.

Merchant of record for software and SaaS companies, running checkout, subscriptions, global tax and payouts so sellers do not handle VAT registration or payment compliance themselves.

Relational database system for transactional and analytical enterprise workloads, with clustering, partitioning, replication and security features for large deployments.

Search engine with its own web index and no profile based tracking, offering AI summaries and a paid API, used by people leaving the big search engines.

Search results API returning structured data from Google, YouTube, Amazon and dozens of other engines, used by developers for rank tracking, competitor research and grounding AI applications.

Media management service for images and video, handling uploads, storage, on the fly transformations and delivery through a content network.

Development platform for engineering teams to build web apps and agents that drive CAD, BIM and FEM tools, used by structural, civil and mechanical engineers to automate repetitive design work.

Embeddable CSV importer for SaaS products, handling column mapping, validation rules and error correction in the browser so customer onboarding does not fall to support engineers.

Transactional messaging service for sending email, SMS and WhatsApp through an API or SMTP, with templates, delivery tracking and webhooks used by SaaS and ecommerce developers.

Compliance service for websites and apps generating privacy policies, terms and cookie banners, with consent records for GDPR, used by small businesses without in house legal counsel.

Voice assistant built into Apple devices, answering questions, controlling apps and settings, and running shortcuts by spoken command.

Rich text editor for web applications with real time collaborative editing, comments, track changes and revision history, licensed to product teams building content tools.

Observability platform for logs, metrics, traces and security events, storing data in your own cloud account and tiering it by value to keep costs down as volume grows.

Digital signage service for scheduling and displaying content on screens in stores, offices and schools from a browser dashboard.

Monitoring for scheduled jobs, websites and endpoints, alerting teams when a cron task fails, runs late or a service stops responding.

Email client built into iPhone, iPad and Mac, handling multiple accounts over IMAP and Exchange with threading, search, rules and scheduled sending.

Payments infrastructure for accepting card and bank transactions online, with APIs for checkout, payouts, fraud checks and reporting.

AI governance platform for enterprises, registering models and use cases and tracking them against internal policies, risk assessments and regulatory requirements.

Email service from 37signals with its own web and mobile apps, screening new senders, grouping newsletters and receipts, sold as a yearly subscription with a personal address.

Email service with end to end encryption and Swiss hosting, offering web, mobile and desktop apps, custom domains and a calendar, used by people wanting private mail.

Deployment platform that runs applications on Kubernetes inside your own AWS, Google Cloud or Azure account, giving developers a push to deploy workflow without writing cluster configuration.

Conversational AI platform for customer service, letting companies build agents that answer customer questions and resolve requests over chat and voice.

Machine translation service on AWS that converts text between dozens of languages through an API, with custom terminology, used by developers localizing apps, support tickets and product catalogs.

Billing and automation software for hosting companies, handling invoices, payments, client accounts and automatic provisioning of servers, domains and SSL through provider modules.

Vector graphics editor for drawing logos, icons, illustrations and typography that scale to any size, used by designers and illustrators.

Raw photo editor for desktop with lens correction, denoising and local adjustments, used by photographers who want camera specific optical corrections before finishing an image.

Team chat tool with unlimited message history, voice messages, video calls and a built in task board, aimed at small teams replacing email threads.

Email service for sending marketing campaigns and transactional messages over SMTP or API, with a drag and drop template editor and deliverability reporting for developers and marketers.

Security orchestration and automation tool that runs playbooks across security products to triage alerts and respond without manual steps.