Features

 
Feature Community Edition (CE) Pro Edition (PE)
Licence open-source commercial
API
CLI scripts
Plugins 3+ 3+
·    
Authentication Tigrosa
Database SQLite PostgreSQL
Cache Redis
Message broker RabbitMQ
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High-availability
Horizontal scaling
Error recovery
Resource management
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Concurrent crawls 1 ∞¹
Pages/crawl ∞²⁺³ ∞¹
User-agents ∞¹
Rate-limit (reqs/s) 1/10³ ∞¹⁺⁴
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Robots.txt
Crawl max pages
Crawl max depth
List crawls
External link check
Crawl cancellation
Organisations
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Crawler channels 1 ∞¹
Processor channels 1 ∞¹
Streamer channels 1 ∞¹
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OS variant Linux Linux
Packaging container container
Support community direct
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Price free on request

Features and limits are indicative only, not guarantees. ∞ indicates many, not infinite! ¹ depending on licence and infrastructure. ² no hard-limit, but small as single-process. ³ not configurable. ⁴ set globally per-site; configurable for on-prem only.