Search

algolia.com — Hosted search solution with typo-tolerance, relevance, and UI libraries to easily create search experiences. The free “Build” plan includes 1M documents and 10K searches/month. Also offers developer documentation search for free.
bonsai.io — Free 1 GB memory and 1 GB storage
CommandBar - Unified Search Bar as-a-service, web-based UI widget/plugin that allows your users to search contents, navigations, features, etc. within your product, which helps discoverability. Free for up to 1,000 Monthly Active Users, unlimited commands.
Magny - SaaS service that helps implement command palettes (e.g. in-app search), which significantly decreases the time users find anything in an app, leveraging the user experience and efficiency.
Orama Cloud — Free 3 indexes, 100K docs/index, unlimited full-text/vector/hybrid searches, 60 days analytics
searchly.com — Free 2 indices and 20 MB storage