GNU Affero General Public License v3.0
practical callout
If you self-host an AGPL-3.0 application for your team without modifying it, you are not obligated to share source. If you modify it and expose it over a network (even internally to employees or externally to customers), you may owe corresponding source to those users. Read the license text and seek counsel for your specific deployment before relying on this summary.
what it permits
commercial usemodificationdistributionpatent grant
what it requires
disclose source codeinclude license and copyright noticestate changes to the codedistribute under the same license (copyleft)offer source to users interacting over a network
network deployment note
AGPL-3.0 closes the GPL 'SaaS loophole'. If modified AGPL software is exposed to users over a network, those users must be offered the corresponding source code. This is the key difference from GPL-3.0.
tools using this license3 alternatives
sources