Open Source Alternatives To Popular Software
Browse free, open source replacements for popular proprietary tools.

Authy
Authy is a two-factor authentication (2FA) app by Twilio that syncs TOTP codes across multiple devices via encrypted cloud backup. It supports SMS, push notifications, and QR code-based token setup.

AutoCAD
Industry-standard 2D and 3D computer-aided design (CAD) software from Autodesk, used for drafting, modeling, and documentation across architecture, engineering, and construction.

Autodesk Fusion 360
Cloud-connected parametric CAD, CAM and CAE application from Autodesk for product design and manufacturing. Free for personal and hobby use with feature limits; commercial seats are sold as annual or monthly subscriptions.

Autodesk Inventor
Professional parametric 3D mechanical CAD application from Autodesk for part, assembly and drawing production, sold as an annual or monthly subscription.

Automation Anywhere
Enterprise RPA platform with AI-powered bots that automate business processes including web scraping, data entry, and cross-application workflows.

Avid Pro Tools
Avid Pro Tools is a professional digital audio workstation from Avid Technology for recording, editing and mixing music, film, broadcast and post-production. Long regarded as the industry standard DAW in studios, it follows the Edit and Mix window workflow the other makers copied, and is licensed through subscription tiers (Artist, Studio, Ultimate).

Avoma
AI meeting assistant with automatic transcription, summarization, and conversation intelligence for sales and customer success.

Azure Key Vault
Azure Key Vault is Microsoft Azure's managed service for storing and controlling access to secrets, encryption keys, and certificates. Access is governed by Microsoft Entra ID (formerly Azure Active Directory) and RBAC, with auditing, hardware security module support, and integration across Azure services. It is a paid cloud service billed by operations and storage.

Babylon
Babylon is a commercial dictionary and translation software for Windows and macOS, first released in 1997. It offers single-click translations, glossaries in dozens of languages, and premium dictionary subscriptions sold as add-ons. The software shifted from a free ad-supported model to paid licenses, and its dictionary files use a proprietary format that locks content into the Babylon ecosystem.

Backblaze
Backblaze is a cloud storage and online backup service offering personal computer backup (Backblaze Personal Backup) and cloud object storage (Backblaze B2). It provides automated, continuous backup of files to the cloud at a low monthly cost, making it a popular choice for individuals and businesses seeking affordable offsite backup.
Backloggd
Backloggd is a video game tracking platform inspired by Letterboxd. It lets gamers log, rate, and review the games they have played or want to play, build public collections, follow friends, and discover new games through community lists and reviews.

BambooHR
BambooHR is a paid HR software platform for small and mid-sized businesses, covering employee records, time tracking, payroll, benefits administration, and performance management.

Bandicut
Bandicut is a video cutting and joining program from Bandicam Company for Windows. It trims and splits video files with a high-speed mode that cuts without re-encoding the whole file, can merge multiple segments, and offers an encoding mode for output format conversion. The free version adds a watermark, with paid licenses removing it.

Bardeen
AI-powered browser automation platform that automates repetitive web tasks and data extraction using natural language prompts and pre-built playbooks.

Barracuda Message Archiver
Barracuda Message Archiver is a commercial email archiving product from Barracuda Networks that indexes and stores email messages for retention, search, and compliance. It is sold both as a physical/virtual appliance and as a cloud service and is popular with mid-sized organizations that want on-premises-style archiving.

BatchPurifier
A Windows desktop tool by Digital Confidence that removes 60+ hidden data types from 28 file formats including JPEG, PNG, WebP, SVG, Office documents, PDFs, and MP4. Provides thorough metadata scrubbing beyond what built-in OS tools offer.

Beamer
Beamer is a product communication platform that lets SaaS teams publish in-app changelogs, feature announcements, and product news, and collect customer feedback such as feature requests and NPS surveys.

BeeFree
A drag-and-drop HTML email template builder that helps teams design, collaborate, and export emails to any sending platform. Features a large template catalog, brand safeguards, mobile design tools, and integrations with ESPs like Mailchimp, HubSpot, Klaviyo, and Salesforce.

Better Stack
Better Stack (formerly Better Uptime) is a modern uptime monitoring and incident management platform with beautiful status pages, on-call scheduling, and log management.

BigOven
Recipe organizer with over 1,000,000+ recipes, meal planner, grocery list, and cooking videos. Features recipe saving, menu planning, and shopping list organization.

Bing
Bing is Microsoft's proprietary search engine, offering web search, image search, video search, news, and AI-powered Copilot integration. It is deeply integrated with the Microsoft ecosystem and Edge browser.

BitTorrent
BitTorrent is the consumer torrent client brand of BitTorrent, Inc., shipping BitTorrent Classic for desktop and BitTorrent Web, a browser-hosted downloader. The free versions display advertising and promote paid Pro upgrades.
Bitbucket
Bitbucket is a Git-based source code repository hosting service owned by Atlassian. It offers source code management, pull requests, CI/CD via Bitbucket Pipelines, and tight integration with Jira and Confluence.

Bitly
Bitly is the most popular link management platform. It allows users to shorten long URLs, create branded links, track click analytics, and manage campaigns. Founded in 2008, Bitly is used by millions of individuals and businesses including Fortune 500 companies for link shortening and analytics.

Bitsgap
Bitsgap is a cloud-based cryptocurrency trading platform offering automated grid bots, portfolio management, and arbitrage tools across 15+ exchanges. It features a visual strategy builder and multi-exchange portfolio tracking.

Bitwarden
Bitwarden is a freemium cloud-based password manager. It stores encrypted credentials in the cloud and syncs them across devices via official apps for all major platforms. A hosted subscription is required for team and premium features.
Bloomberg Terminal
Professional financial data and analytics platform used by traders and analysts worldwide.

Bluesky
Bluesky is a decentralized microblogging social network built on the AT Protocol, featuring short text posts, follows, replies, and custom feeds. It is developed by Bluesky PBC.

Bobby
Bobby is a mobile subscription tracker app for iPhone and Android made by Yummygum. It lets users log recurring subscriptions from a catalog of hundreds of preset services, see total fixed costs at a glance, and get notifications before bills are due.

Bomist
Bomist is a desktop inventory and bill-of-materials manager for electronics, with local data storage, BOM management, and purchasing features. It offers a limited free version plus paid plans.

BookItBee
BookItBee is a UK-based event registration and ticketing platform aimed at small and medium event organizers. It offers online registration, payment processing, and attendee management with a focus on simplicity.

Brave
Brave is a privacy-focused web browser built on Chromium that blocks ads and trackers by default. It offers a built-in VPN, crypto wallet, and an opt-in ad rewards program.
Brevo
Brevo (formerly Sendinblue) is an all-in-one marketing platform with email marketing, SMS marketing, chat, CRM, and marketing automation features.

BricsCAD
Commercial DWG-based CAD platform from Bricsys that provides 2D drafting, 3D modeling, mechanical design, and BIM capabilities with full AutoCAD .dwg compatibility.

Bright Data
Enterprise web data platform offering proxy infrastructure, web scraping tools, and datasets. Formerly known as Luminati, it provides residential, datacenter, and mobile proxies.

Browse.ai
No-code data extraction and monitoring platform that trains robots in minutes to scrape data from any website and monitor changes over time.

Buffer
Buffer is a social media management platform that lets you schedule posts, track engagement analytics, and manage multiple social accounts from a single dashboard.

Bugsnag
Error monitoring and crash reporting platform for mobile, web, and backend applications, owned by SmartBear. It groups errors, tracks release health and app stability scores, and routes alerts to the tools a team already uses.

Builder.io
Builder.io is a proprietary visual headless CMS and no-code page builder for marketing teams and developers. It offers a hosted content platform with a paid SaaS model.

Burp Suite
Burp Suite is a commercial web application security testing platform from PortSwigger. It includes a proxy for intercepting traffic, scanners for automated vulnerability discovery, and tools for manual web exploitation. It is the de facto standard toolkit for web pentesters and available in Community, Professional, and Enterprise editions.

Buzzsprout
Buzzsprout is a popular podcast hosting platform that makes it easy to publish, promote, and track your podcast. It offers tools for distribution to major podcast directories, analytics, and monetization options.

CCleaner
System optimization and privacy tool that cleans junk files, browser history, and fixes registry issues.

Cal.com
Cal.com is a scheduling platform for individuals and teams. It lets you control when you are available, connect one or more calendars, and share a booking link so people can schedule meetings with you. It offers a free tier plus paid plans for teams, and runs as a hosted cloud service.

Calendly
Open source alternatives to Calendly.

Cambridge Dictionary
Cambridge Dictionary is Cambridge University Press online dictionary for English learners, providing definitions, translations, and pronunciation. Premium ad-free and licensed data options are paid.

CamelCamelCamel
CamelCamelCamel is a free web-based Amazon price tracker that records price history for Amazon products and sends alerts when prices drop below a user-set threshold. It tracks Amazon marketplaces in multiple countries.

Campaign Monitor
Campaign Monitor is an email marketing platform known for its beautifully designed templates and drag-and-drop email builder for marketers.
Camtasia
Camtasia is a professional screen recorder and video editor by TechSmith, widely used for creating tutorials, training videos, and software demos.

Canny
Canny is a customer feedback management platform that helps SaaS product teams collect, organize, and prioritize feature requests and bug reports. It provides public feedback boards where customers can submit ideas and upvote on each other's suggestions, a public roadmap to communicate priorities, and a changelog to announce shipped features. Canny's AI-powered Autopilot reads sales and support conversations to surface feature requests automatically, helping product, sales, customer success, and marketing teams work from the same customer signal. Integrations cover Slack, Intercom, Jira, Linear, Salesforce, HubSpot, Zendesk, and dozens more.
Canva
Open source alternatives to Canva.
CapCut
Open source alternatives to CapCut.