Since people are recommending other projects of this kind, allow me to throw in https://hashbang.sh/ https://hashbang.sh/ which is IMHO the slickest one. frees

Since people are recommending other projects of this kind, allow me to throw in https://hashbang.sh/ https://hashbang.sh/ which is IMHO the slickest one. freeshell.de, however, has this great oldschool feel without being too crowded. Very hipster, highly recommended.