Here are some of the features that make Groestlcoin special:

First coin with SegWit. Groestlcoin is a blockchain pioneer by being the first coin that activated SEGWIT in January 2017.

Enabling Lightning Network, Groestlcoin gets almost ZERO fee transactions, instant payments, scalability and Atomic Swaps.

Extremely low fees. The fee for transferring 10,000 GRS is 0.000045 GRS.

The only coin capable of being sent over SMS.

Continuous development! Every 3 months our developers team release new features and updates.

The only coin that has succesfully ported Bitcoin Armory.

The only coin that has 120 Electrum public servers, from which 40 are TOR servers.

One of the few coins that has an Ubuntu PPA available.

One of the few coins that is officially maintained by the Debian Cryptocoin Team.

The only coin that has succesfully ported Multibit HD.

We have 11 different Android wallets. Most struggle to have just 1.

We have 10 different Blackberry wallets. Most don't have any.

We have 3 different iOS wallets.

We have over 10 different desktop wallets.

The only coin that has ported Samourai and thus succesfully implemented BIP147. You can work with payment channels with Groestlcoin.

One of the few coins where you can play with OP_HOLD, RBF and other new features.

The only coin that has ported Electrum client to Java.

One of the few coins that has ported Rushwallet.com.

The only coin with over 200 repositories of developed work.

The only coin that has wallets which can use NFC tags as encryption key.

The only coin that has ported Msigna.

The only coin that has ported Sentinel.

The only coin that is still being compiled with Visual Studio (like Satoshi himself did).

One of the few altcoins that have a working testnet.

One of the few altcoins that are hosting their own block explorer.

One of the few altcoins that even have wallets for testnet.

The only altcoin that has ported Libbitcoin to Groestlcoin.

One of the few altcoins that are keeping their Core wallet up to date.

Multipool resistant. Basically makes it far less likely for a fork to be stuck in the coin creating all sorts of anomalies and problems.