NekoX is an third-party Telegram client, based on Telegram-FOSS with features added.

* Most of Nekogram's features
* Max account limit set to 32
* OpenCC Chinese Convert
* Built-in Vmess, Shadowsocks, SSR proxies support
* Built-in public proxy list / Proxy subscription support.
* Proxies import and export, remarks, speed measurement, sorting, delete unusable nodes, etc.
* Scan the qrcode (any link, can add a proxy).
* The ( vemss / vmess1 / ss / ssr / rb ) proxy link in the message can be clicked.
* Allow auto disable proxy when VPN is enabled
* Proxy automatic switcher
* Add stickers without sticker pack
* Allow disable vibration
* Allow clicking on links in self profile
* Sticker set list backup / restore / share
* Full InstantView translation support
* Translation support for selected text on input and in messages
* Delete all messages in group
* Dialog sorting is optional "Unread and can be prioritized for reminding" etc.
* Allow to skip "regret within five seconds"
* Unblock all users support
* Login via qrcode
* Scan and confirm the login qrcode directly
* Allow clear application data
* Option to not send comment first when forwarding
* 0ption to use nekox chat input menu: replace record button with a menu which contains an switch to control link preview (enabled by default)
* Option to disable link preview by default: to prevent the server from knowing that the link is shared through Telegram.
* Option to ignore Android-only content restrictions (except for the Play Store version).
* OpenKaychain client ( sign / verify / decrypt / import )
* Google Cloud Translate / Yandex.Translate support
* Custom cache directory (supports external storage)
* Custom AppId and Hash (optional NekoX / Andorid / Android X or Manual input)
* Custom server (official, test DC or Manual input)
* Keep the original file name when downloading files
* View the data center you belong to when you don't have an avatar
* Proxies, groups, channels, sticker packs are able to shared as qrcodes.
* Force English emoji keywords to be loaded
* Add "@Name" when long press @ user option
* Enhanced notification service, optional version without Google Services.
* Don't alert "Proxy unavailable" for non-current account
* Option to block others from starting a secret chat with you
* Allow create group without invite
* Option to upgrade group to supergroup
* Mark dialogs as read using tab menu
* Option to hide device info
* Improved session dialog
* Improved link long click menu
* Text replacer
* Option to disable trending
* Tgx style message unpin menu
* Built-in Material Design themes / Telegram X style icons

Anti-Feature: Non-Free Network, since the servers run proprietary software.
The official source code of the app contains binary blobs, so this tracks a fork which builds those from source. Hence, versions might become available with a certain lag.