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The open-source landscape is rapidly evolving, with innovative startups leveraging its power to develop large-scale solutions. As we navigate 2025, several pioneering startups are poised to make a significant impact with their groundbreaking open-source innovations. Here are the top 10 open-source startups to watch this year.
Open source startups are transforming industries with scalable solutions. Here are the 10 best open source companies, read below.
Supabase is known as the open-source Firebase. It is growing quickly, with over 160,000 developers using it. This enables the faster and more efficient building of applications. Last year, Supabase raised $80 million.
PostHog is an open-source product analytics tool. This is one of the best open source companies that has over 15 thousand stars on GitHub. Many small and large enterprises make use of it. One central capability of PostHog is in tracking user actions and behaviour.
Meilisearch is a fast and flexible search engine with over 40,000 stars on GitHub. It is popular among startups because of its quick search attributes. It has raised $15 million in funding.
Plausible offers privacy-focused website analytics. It is open-source, straightforward, and among the top tech startups. Over 10,000 websites use Plausible, and its revenue crossed $2 million in 2024.
Cal.com is a free scheduling software that helps people book meetings. Over 40,000 teams use Cal.com, which is steadily growing into a competitor of Calendly.
Being an open-source tool, ToolJet enables users to create internal applications. It has 20,000 GitHub stars. Some of the benefits of ToolJet include the time and cost savings common in many startups. It raised $4 million last year.
Nhost is a fully open-source platform for developers to build web and mobile app backends. In 2024, it raised $13 million. Many startup companies use Nhost for serverless products.
Budibase helps build internal business apps fast. It is open-source and easy to use. Over 20,000 companies use Budibase. It raised $7 million recently.
Appwrite is an open-source backend server for web and mobile apps. It has over 35,000 stars on GitHub. Startups trust it for user authentication and databases. Appwrite raised $27 million in funding.
Hoppscotch is an API development tool. It has over 55,000 GitHub stars. Developers use it for testing APIs. Hoppscotch makes API work simple and smooth.
These open-source startups are paving the way for startup trends 2025. As they illustrate, open source is depicted as having the ability to spur growth. Data analytics to application programming interfaces or APIs, these startups expedite work processes and quality. Open source innovation is the future of technological change. As these startups continue to grow, they will unlock more opportunities and redefine the industry.
