The best replacement for jul is log4j.

The best alternatives to jul are rated as following:
★★★★★  log4j
★★★  slf4j
★★★  logback
★  july
★  gledelig jul

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Speaking about jul, one probably shouldn't forget about chloe delaure.

Other search terms related to jul and their ratings are:
★★★★★ chloe delaure
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