crowdspider is a multi-thread web crawler. crowdspider is (just) a web crawler, NOT an indexer. You have to write some code yourself in order to save pages or index them in a database.
Larbin is a Web crawler intended to fetch a large number of Web pages, it should be able to fetch more than 100 millions pages on a standard PC with much u/d. This set of PHP and Perl scripts, called webtools4larbin, can handle the output of Larbin and p
Web Textual eXtraction Tools C++ Parallel web crawler, noun phrase idenification, Multi-lingual Part of Speech Tagging, Tarjan's Algorithm, Co-RelationShip Mappings...
Larbin is an HTTP Web crawler with an easy interface that runs under Linux. It can fetch more than 5 million pages a day on a standard PC (with a good network).
Auth0 Token Vault handles secure token storage, exchange, and refresh for external providers so you don't have to build it yourself.
Rolling your own OAuth token storage can be a security liability. Token Vault securely stores access and refresh tokens from federated providers and handles exchange and renewal automatically. Connected accounts, refresh exchange, and privileged worker flows included.