On that page there is an explciit reference to the unrar license mentioned in first post. It say it may be used provided a notice is given

On 7/15/2015 11:07 AM, Nick Burch wrote:
On Tue, 14 Jul 2015, Chris Harshman wrote:
Personally, I'd conduct a review of each component if license compliance is important to you (e.g., if you're going to release a commercial product incorporating the code).

While Apache tries to ensure the software it produces is "commercially friendly", this is good advice, especially if you're new to including open source in your project.

The ASF has rules on what kinds of licenses dependencies are allowed to have, to try to ensure that you can use ASF projects under basically the terms of the Apache License v2, without having a dependency "surprise" you by forcing the whole lot under different conditions. You can read about this, and the allowed + forbidden licenses here:
http://www.apache.org/legal/resolved.html
If you want to find the background to any of those decisions, you'd need to check the ASF legal jira, and the ASF legal-discuss list

If we've done it right, you should be fine to use Apache Tika in your commercial product, modulo the usual restrictions in the license on attribution, notices, trademarks, no support/warranty etc, for Tika and the dependencies. That said, you didn't pay for Tika, and you didn't pay for this advice, so depending on your experience + use-case you may wish to check it formally!

Nick

Reply via email to