Altboorus

Booru	Technology	DNPs?	Paid content?	Loli legal?	Additional restrictions?
Ponerpics	Philomena	Policies under construction	Policies under construction	Yes	None
Rainbooru	Rainbooru (custom)	No, never	Allowed	Yes	None
Ponybooru	Philomena	Yes	Policy under construction	Yes	Low-effort bait images
Twibooru	Booru-on-Rails	No, never	Allowed	Yes	None
Manebooru	Philomena	Yes	Forbidden	No	Policies against "hateful" / discriminatory / foalcon / propaganda
Derpibooru	Philomena	Yes	Forbidden	No	Extensive policies against "hateful" or discriminatory images

Booru	Specialty	Technology	DNPs?	Paid content?	Loli legal?	Additional restrictions?
Lyrabooru	Plushies and plushophilia	Shimmie	No mention found	Allowed?	Yes	No content involving IRL minors
Foalcon	Foalcon and lolicon	Szurubooru	No, never	Allowed	Yes	None
Fluffybooru	Fluffy ponies	Shimmie	Yes	Possibly forbidden?	Yes	None

Details

Ponerpics

Website: ponerpics.org
Rules: ponerpics.org/pages/rules
Ownership: Lotus, Atlas
Philosphy: Ponerpics has been created as a Philomena-based booru with laisser-faire moderation. Being one of the first boorus to complete a full import of Derpibooru dumps, it is also the only one to display legacy derpibooru data and expose it in the search syntax (namely, scores and favourites), and image IDs on Ponerpics match those on Derpibooru. Its exact stance on DNPs and artist takedowns is as yet unclear; this will be updated in the future. The intention appears to be to find a balance between allowing users freedom to upload what they wish, and letting artists excercise their rights over their art.

Rainbooru

Website: rainbooru.org
Rules: At the bottom of the page
Ownership: Buttercream, assisted by Patachu, Niggerdrawfag
Philosphy: Rainbooru aims to be a full archive of all pony art, no ifs, no buts. Takedowns will never be honored, paywalled artwork can be posted with no restrictions, there is no concept of DNPs, edits are not restricted, etc. To achieve this, Rainbooru has taken measures to protect itself against DMCA takedowns and similar legal threats. Rainbooru is being developed from scratch, without using existing booru software. At the time of last update, the lead dev had not communicated, nor updated the site, for several weeks. Development appears to be currently on hold. This will be updated with new developments as they arise.

Ponybooru

Website: ponybooru.org
Rules: ponybooru.org/pages/rules
Ownership: ZizzyDizzyMC
Philosphy: Ponybooru aims to be a straight Derpibooru replacement, but with no content banned solely by the staff. In other words: DNPs are respected, but outside of that, almost anything that's pony and legal can be uploaded; the only restriction is against "low-effort images designed solely to cause a problem", which should ensure that sufficiently high-effort art is exempt regardless of whether it causes problems. Based on Philomena, Ponybooru is also mostly keeping the rest of the experience familiar: you'll find badges, a similar forum structure, etc. However, Ponybooru also aims to improve Philomena, by adding support for more types of content (including .mp4 videos, sound-only or even text content), as well as sorely-lacking moderation auditing tools to improve transparency.

Twibooru

Website: twibooru.org
Rules: twibooru.org/pages/rules
Ownership: Twifriend
Philosphy: Twibooru has similar aims to Rainbooru: namely, archive pony art. Just like Rainbooru, there are no DNP policies, takedowns will not be honoured, etc. It is based on Derpibooru's former Booru-on-Rails backed, which is more mature than Philomena but had been unmaintained for a few months before being picked up for Twibooru. The site's stated focus is on being an art repository rather than a community hub; as such, forums are read-only to users, and comments are disabled by default (can be enabled in profile settings) and are anonymous-only. Twibooru aims to improve Booru-on-Rails with new features, much as Ponybooru with Philomena, as well as updating the codebase to improve performance.

Manebooru

Website: manebooru.art
Rules: manebooru.art/pages/rules
Ownership: Flat hierarchy; notable staff members include Potluck
Philosphy: The newest alternative booru, Manebooru strives to be a safe-space imageboard. Account registration and login are required to post content or to comment on art; the downvote feature is disabled. The wishes of artists take top priority: DNPs are fully enforced, and pay-gated artwork cannot be posted except with artist permission. Manebooru has strict content policing rules, and forbids any "hateful"/racist/sexist content, as well as foalcon and loli; comment sections for art related to controversial political topics get locked. Art imported from Derpibooru has the original Derpibooru image IDs.

Derpibooru

Website: derpibooru.org
Rules: derpibooru.org/pages/rules
Ownership: TheSmilingPony (aka TheFrowningPony, Teaspoon), assisted by Joey, Luna, and Princess Luna
Philosphy: The oldest still-active general-purpose pony booru, Derpibooru is the "original" to all the other "alternative" boorus. As such, right now it boasts the largest active community. Its shortcomings include vague and questionably-enforced rules that can be used to delete pictures that would otherwise have been perfectly legal, and a history of questionable staff actions, combined with a severe lack of moderation transparency.

Last updated on: 2020-09-09

I try to keep on top of things. Nevertheless, things are moving fast, and I may fall behind. If you notice any wrong information, please let me know! Contact me at: updateyoursiteyoucunt@horsefucker.org

Feel free to also contact me with suggestions for improving the site or other feedback.

Source: https://gitlab.com/emndc8549phnxel/altboorus. Don't judge.

Comparison

Generic boorus