https://docsearch.algolia.com/ It's free!!! Many softwares and websites are using Algolia as a search engine (paid service). However, a service called DocSearch provides free service for tech blogs and documentation. Regular algolia requires the author to upload data for indexing. DocSearch uses a web crawler to periodically scrape your site just like a real search engine. There are requirements to meet in order to use DocSearch, [see details](https://docsearch.algolia.com/docs/who-can-apply#the-checklist) 1. Your website must be publicly available (no auth or private network). 2. Your website must be a technical documentation of an **open source** project or a **technical blog**. 3. Your website must be production ready (no empty websites nor placeholder). To apply, you will need to provide the following information, [application](https://docsearch.algolia.com/apply/) 1. Website URL 2. Contact Email (code snippet will be sent) 3. Repository URL (to verify if your project is open-source)