When comparing ELSA vs Stackify, the Slant community recommends Stackify for most people. In the question“What are the best log management, aggregation & monitoring tools?” Stackify is ranked 25th while ELSA is ranked 47th. The most important reason people chose Stackify is:
We are using Stackify to monitor everything related to the app including the app performance, server performance, DB, webpages, custom metrics and then when an issue happen, it is great to have the errors and logs all connected together. Way better than any of the log only or error only tools
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Open source
ELSA is free and open source, released under the GPL license.

Pro Easy to install, value out-of-the-box, easy to use
We are using Stackify to monitor everything related to the app including the app performance, server performance, DB, webpages, custom metrics and then when an issue happen, it is great to have the errors and logs all connected together. Way better than any of the log only or error only tools
Cons
Con Poor documentation
The project looks already old with a poor documentation and no clear information about the Web UI.
Con Does not work on CentOS
Installation fails on CentOS
Con No Free Plan
There is no free plan.
Con Minimal
Loggly cannot scale into a full blown infrastructure for analytics. This is simply a tools for parsing log data coming from your apps.
