Browse Open Source Software Alternatives

Reference manager for academic writing that collects PDFs from the browser, organizes a library and inserts citations in Google Docs and Word, used mainly by researchers and students.

Reference management service from Clarivate, licensed by universities so students and faculty can collect citations, store PDFs and format bibliographies in Word and Google Docs.

Unified API service that maps many SaaS vendors onto one interface for accounting, CRM, HRIS and file storage, used by product teams shipping customer integrations without maintaining each connector.

Product information management system where retailers and manufacturers centralise catalog attributes, images and translations, then syndicate them to online stores, marketplaces and print channels.

Virtual data room for sharing confidential documents with granular permissions, watermarks and audit trails, used by companies running mergers, fundraising rounds and due diligence. Now sold under Onit.

Illustration and painting app for iPad and iPhone with pressure sensitive brushes, layers and frame by frame animation, bought once by artists, comic creators and concept designers.

AI assistant for email and meetings that sorts an inbox, drafts replies in the user's own voice and writes notes from calls.

Online form builder for surveys, contact forms and order forms, with templates, conditional logic and integrations for routing the responses you collect.

Backup and recovery software for virtual machines, physical servers, cloud workloads and Microsoft 365 data, used by IT operations teams to restore systems after failure or ransomware.

Web browser from OpenAI with ChatGPT built into the sidebar and an agent mode that clicks through pages, aimed at people who want the assistant on every site.

Integration service connecting over a thousand cloud and on-premises apps into automated workflows built by drag and drop, used by marketing, sales, support and operations staff without coding.

Event tracking service where applications post signups, payments and errors over HTTP, turning them into charts, user journeys and push notifications for founders watching a live business feed.

Experiment tracking and model monitoring platform that logs runs, metrics, hyperparameters and artifacts, with prompt and LLM evaluation, used by machine learning teams comparing training results.

Assistant built into Word, Excel, Outlook and Teams that drafts documents, summarizes threads and meetings and answers questions over company files, licensed per seat for office workers.

Cloud compute service renting virtual machines by the hour, with a wide range of instance types, used by engineering teams to run servers and workloads on AWS.

Applicant tracking system for posting jobs, screening candidates and running structured interviews, used by recruiters and hiring managers to move applicants through a defined pipeline.

Recruiting software covering job posting to multiple boards, candidate sourcing, interview scheduling and offers, used by small and mid sized companies without a large talent team.

Developer platform for voice AI agents, wiring speech recognition, language models and speech synthesis into low latency phone calls, used by engineers adding automated calling to their products.

Hosted API mocking service that stands in for third party and unfinished services, letting developers and QA teams simulate responses, latency and faults while testing against unstable dependencies.

Communications API provider offering voice, SMS, video and verification, plus hosted business phone service, used by developers embedding calls and messaging and by companies replacing office phone systems.

Travel and expense management suite for booking trips, capturing receipts, filing expense reports and paying invoices, used by finance departments enforcing corporate spend policy.

Hosted agent runtime from Anthropic that runs Claude in a sandbox with file, shell and web tools, used by developers who want long running agents without building their own loop.

Application performance monitoring product, now sold as Splunk AppDynamics, tracing transactions across Java and .NET services so operations teams can find slow code and failing dependencies.

Inference platform serving language, vision and audio models behind a fast API, with fine tuning and dedicated deployments, used by engineering teams shipping AI features in production.

Machine learning platform on Google Cloud for training, tuning and serving models, including Gemini and a model garden, used by data scientists and engineers building AI systems.

Note taking and knowledge tool built on structured nodes and supertags, turning meetings, tasks and research into queryable data, used by people who outgrew plain outliners.

Business dashboard tool that pulls metrics from marketing, sales and finance apps into shared scorecards, used by agencies and small teams reporting on performance.

Static analysis platform for finding security bugs and policy violations in code, with rules written as code patterns, used by application security teams gating pull requests.

Code quality and security scanner that reports bugs, vulnerabilities and technical debt per project, wired into CI so teams block merges that fail a quality gate.

Customer engagement platform for sending push notifications, email, SMS and in-app messages from behavioral data, used by marketing teams to build lifecycle campaigns and segment users.

Live streaming and recording software for broadcasting gameplay, webcams and presentations to platforms such as Twitch and YouTube.

Cap table software for startups, tracking shares, options and SAFEs, modeling funding rounds and running 409A valuations, used by founders, finance leads and their lawyers.

Social platform of topic based communities where members post links and discussions, and votes decide what rises to the top.

Blogging service built by the Posterous founders, with posting by email, custom domains and a promise to keep published pages online permanently for a flat monthly fee.

Monitoring for cron jobs and scheduled tasks that alerts you when an expected check in never arrives, for teams running backups and background work.