Browse Open Source Software Alternatives

Note taking app on Apple devices for writing text, checklists, sketches and scanned documents, syncing them across iPhone, iPad and Mac.

Low code tool for building conversational agents and copilots on Microsoft 365 data, used by IT and business teams to publish bots into Teams, websites and internal apps.

Issue tracker and planning tool for software teams, organizing work into cycles, projects and triage queues with keyboard driven navigation.

Email delivery API and SMTP service for developers, sending transactional and bulk mail with routing rules, address validation and deliverability analytics.

Feature flag platform for releasing code gradually, targeting users by segment and turning features off without a deploy, for engineering teams.

AI gateway that routes requests to language model providers, adding caching, retries, guardrails, observability and cost tracking.

Proxy layer for calls to model providers, adding caching, rate limiting, retries, logging and cost analytics, used by developers who route their application traffic through Cloudflare.

Enterprise search and recommendation service that indexes intranets, support portals and commerce catalogs, used by large companies to surface relevant content for customers and employees.

Chromium based web browser bundled with Windows, adding vertical tabs, collections, profile sync and management controls for consumers and enterprise IT.

Workflow service that coordinates distributed steps into state machines, handling retries, branching and long running processes across AWS services and functions.

Business intelligence tool for exploring data and building interactive dashboards, connecting to databases and files for analysts and business teams.

Managed time series database for storing and querying metrics from applications, sensors and devices, with automatic tiering between memory and long term storage.

Web browser built on Chromium with a built in VPN, ad blocker, messenger sidebar and AI assistant, used by people who want those extras without installing extensions.

Website builder with templates, hosting, domains and online store features, aimed at small businesses, creators and portfolio sites.

Uptime and performance monitoring that checks websites from locations around the world and alerts teams when pages go down or slow.

Platform for building AI chatbots and agents with plugins, workflows and knowledge bases, then publishing them to messaging apps and websites.

Digital experience platform for A/B testing, feature flags, content management and personalization, used by marketing and product teams to experiment on websites.

Hosting and deployment platform for frontend applications, running builds, preview environments and serverless functions for teams shipping web projects.

Connects web applications so an event in one triggers actions in another, letting non-developers automate repetitive tasks between tools.

Business intelligence platform that models warehouse data through a shared semantic layer, so analysts and business users build dashboards from consistent metrics.

Read later service that saves web articles for offline reading, stripping page clutter and syncing highlights across phone, tablet and browser.

Feature flag and experimentation platform that rolls out releases gradually and measures the effect of each flag on product metrics.

Bookmarking service for saving, tagging and searching links, with archived copies of pages kept for personal reference.

Website builder with a canvas that outputs responsive React sites, used by designers and marketing teams to ship landing pages, CMS driven blogs and portfolios without writing code.

Low code builder for business applications and forms that connect to company data, letting employees create internal tools without full software development.

Business intelligence tool for connecting data sources, modeling them and publishing interactive dashboards and reports for analysts and business users.

Email delivery service for sending transactional and marketing messages at scale through an API or SMTP relay.

Analytics database on Azure for logs, telemetry and time series, queried with Kusto Query Language by engineering teams running fast searches over very large append only datasets.

Hosted search API that indexes product and content data, returning ranked results with typo tolerance and filters for websites and applications.

Application performance monitoring that traces requests, maps service dependencies and flags anomalies across cloud environments, for operations teams.

Enterprise search and AI assistant that indexes a company's apps, documents and chats so employees can find answers across every internal tool.

Web browser for desktop and mobile, with tab and password sync across devices, an extension store and developer tools for debugging sites.

Browser based diagramming for flowcharts, architecture maps and org charts, with real time collaboration for engineering, IT and business teams.

Zero trust remote access service that connects employees to private company resources without exposing a full corporate network.

Authentication and user management for web applications, providing prebuilt sign in components, sessions, multi factor authentication and organization support.