FerretDB 1.0 GA: open-source MongoDB alternative built on Postgres - https://news.ycombinator.com/item?id=35524235 - April 2023 (2 comments)

FerretDB: A truly open-source MongoDB alternative - https://news.ycombinator.com/item?id=29448906 - Dec 2021 (110 comments)

MangoDB has a new name - https://news.ycombinator.com/item?id=29407987 - Dec 2021 (5 comments)

Open source MongoDB drop-in replacement, built on top of Postgres - https://news.ycombinator.com/item?id=29096331 - Nov 2021 (2 comments)

MangoDB: An open-source MongoDB alternative - https://news.ycombinator.com/item?id=29071623 - Nov 2021 (200 comments)

Show HN: MangoDB - https://news.ycombinator.com/item?id=4139723 - June 2012 (2 comments)