Here is my scenario.
Let us compile a list of free execution environments reachable over the internet.
One answer per answer, please, and list the protocol and host as well as as much detail on the available execution environments as possible.
Try It Online has been created by Dennis and currently supports the following practical and recreational programming languages. (the snippet loads the current list)
<h3>Practical</h3><div id="practical"><ul></ul></div><h3>Recreational</h3><div id="recreational"><ul></ul></div><script>var request=new XMLHttpRequest;request.open("GET","https://tio.run/languages.json"),request.onreadystatechange=function(){var languages,languageArray,id,language,i,item,anchor,j;if(request.readyState==XMLHttpRequest.DONE){languages=JSON.parse(request.response),languageArray=[];for(id in languages)language=languages[id],language.id=id,languageArray.push(language);for(languageArray.sort(function(languageA,languageB){return 2*(languageA.name.toLowerCase()>languageB.name.toLowerCase())-1}),i=0;i<languageArray.length;i++)for(language=languageArray[i],item=document.createElement("li"),anchor=document.createElement("a"),anchor.href="https://tio.run/#"+language.id,anchor.textContent=language.name,item.appendChild(anchor),j=0;j<language.categories.length;j++)document.getElementById(language.categories[j]).appendChild(item)}},request.send()</script>Ideone.com can compile/run over 40 languages, including Brainf**k and Whitespace.
List of supported languages:
turtle.
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Note: I (pxeger) am the author and maintainer of ATO
ATO was originally conceived as a replacement for the increasingly out-of-date Try It Online.
You can find it at ato.pxeger.com.
There is an in-development version at staging.ato.pxeger.com which generally follows the tip of the main branch. If a language is newly added, it will be there for a while before appearing on the main version.
Tutorials Point Coding Ground has a ridiculous number of available IDEs and terminals. Some may require registration, some versions may be old/outdated.
Terminals:
IDEs:
codepad.org lets you paste code into a web interface and shows you the results. It compiles/interprets several languages: C, C++, D, Haskell, Lua, OCaml, PHP, Perl, Plain Text, Python, Ruby, Scheme, Tcl.
Thanks to the work of myself (Mego), VoteToClose, quartata, and CᴏɴᴏʀO'Bʀɪᴇɴ (and building upon the work of ProgramFOX et al.), a chat bot named Data has been built that can run code for several different languages. Stop by the PPCG Code Snippet Chat Bot room to see it in action.
Languages supported:
If you want a language added to the bot, feel free to ask one of us in the chat room.
This is a website that I built, due to the fact that there were no options for running GolfScript online.
Please note that it's experimental; if you notice any bugs, please let me know at golfscriptweb.feedback++@gmail.com.
Please note that the script executes as if it were run from the command line with no arguments. This means that the stack already contains an empty string. If you need to test a script that takes arguments, do the following:
;) first, to pop the empty string off the stack.Here is an example of a script that uses the string arg as a command line argument: http://golfscript.apphb.com/?c=OwonYXJnJwoKezJiYXNlfn0leyt9Kg==
New feature requested by fjdumont - hotkey for the Run button: CTRL+ENTER
Modified website design to make it a bit more usable on mobile devices.
5 5 1 3 3 5 2 4 as input from STDIN: golfscript.apphb.com/…
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Jun 29, 2012 at 5:01
run button... :)
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I believe I now have a solution.
I have integrated Codepad support into my UserScript. When using the script you will see:
Notice the [Run] link on the right. Clicking this will launch the code in Codepad and let you view the output. It's not perfect, and it's not a complete solution... but it works :)
Note: as of v0.35, you can even run code blocks in the markup preview as you're writing your answer.
Note that "APL" is a rather vague term and a program written for one of these interpreters is unlikely to work with one of the others.
⎕-functions), and evaluate (⍎). Nevertheless, simple functions will work, just don't try any I/O.⎕IO is stuck to 0 and it doesn't support ∇-function definitions. Allows inline Javascript, for if you ever get the urge to write a web app in APL.alwaysdata.com has a free 10MB account and supports multiple versions of at least these
PHP
Python 2.4, 2.5, 2.6, 2.7, 3.1
Ruby 1.8.6, 1.8.7, 1.9.2
Perl 5.10
Java
Lua 5.1
OCaml
Erlang
Also many others that people have used for golfing, such as bash/sh/csh/ksh/tcsh/fish/zsh/dc
http://www.quirkster.com/iano/js/ has interpreters for various languages:
Replit is a free online interpreter/compiler I use for quite a few languages.
It can run:
And more. Replit also supports using nix to build custom environments so you can now run pretty much any lanuguage.
* Note: The QBasic interpreter on Replit supports only a subset of QBasic. It usually can't handle golfed QBasic code.
DSO is an online interpreter service I made that runs entirely in your browser. It's a complete work in progress, and mostly runs JS-based languages although I've managed to get some Python-related stuff working too.
The rust playground offers a nice editor with syntax highlighting and lets you choose between different compiler versions. You can also use the top 100 most downloaded crates from crates.io (like chrono, serde and rand).
Anarchy Golf performance checker (link: http://golf.shinh.org/check.rb). It lets you run programs in those 111 languages:
(sorry, the list takes up quite a lot of screen space)
Most languages on Anarchy Golf are out of date, so it is worth checking the version on the page.
Provides a version 1.9 interpreter, but they have disabled pasting into the text field, and there is no easy way to interact with the standard in-/out-put.
While IdeOne may offer an SQL interpreter, to fully leverage SQL you need a database schema and a server to host it. Not to mention, ANSI SQL is more or less dead and every variant of the language has its own ways of implementing all the things that aren't covered in the standard.
That's where SQLFiddle.com comes in, with support for building a schema in a host environment and then querying against it.
Presently-available host environments:
Very handy!
Perhaps obvious, but might be helpful.
Most languages have compilers/interpreters/emulators available for free download (google is your friend). What may be harder is that those compilers/interpreters/emulators may only be available for a limited set of common OSes, for example bash on *nix or powershell on windows. While many of us will have what I consider the three common OSes (Linux, OSX, Windows) available at all times, this is not necessarily a given.
One way around this is virtualization. These days it is a simple matter to install a virtualization environment on your workstation of choice, and then install arbitrary OSes in VMs.
Common virtualization environments (some with free downloads) include:
Then you'll need to find the OS to run in the VM.
Online: https://pyth.herokuapp.com/
Download: https://github.com/isaacg1/pyth
Call with
python3 pyth.py <program>
Not to be confused with ES6Fiddle. ESFiddle allows for running ES6 and ES7 experimental features such as array comprehension and the exponentiation operator which no other transpiler does.
ESFiddle also has syntax highlighting, and icons for console.error and console.warn. It also supports implicit output. You can even create permalinks to link to in your answers.
is a free online pastebin that supports runnable online snippets.
It can run:
There are a couple options for running Piet online:
The following website used to provide an online IDE for Piet, but the link currently seems to be dead.
I had that problem with pi-day golf on SO, the winning solution used the BSD variant of dc. Luckily I was able to confirm the answer on my silenceisdefeat.com which cost me $1. Seems to be dead now though. I guess I'll need to use a VM next time
EDIT: found the silenceisdefeat.com server has been upgraded and is now called saga.silenceisdefeat.net. Seems to be a quad core with 2GB ram
it has:
Python 2.4 2.5 2.6
Ruby 1.8.6
Perl 5.10.1
Simply Scala is a webinterface for interactive coding experience. A REPL (run-evaluate-print-loop).
You don't need to extend the App-class like in IDEONE.
https://codio.com/ offers free Ubuntu virtual machines accessible in the browser. The following languages are available out of the box:
It's possible to install a lot of other languages/platforms, for example:
It's good to note that, at least for me, Coding Ground rarely works.
You can use Rollapp for text editors like emacs, brackets, and there are some IDEs in the 'coming soon' section. It does not support sharing very well, but if you are looking to run other people's code the IDEs may work when they come out (or if they come out). Hopefully they will make Eclipse available and we will have a full java IDE on the web!!
links:
https://www.rollapp.com/app/terminator - run bash and perl etc
https://www.rollapp.com/app/eclipse - eclipse, hopefully will work soon
Has interpreters for a lot of esoteric languages.
That is a Labyrinth interpreter I wrote. (It doesn't support bigintegers yet.) It has a fairly useful debug feature that allows you to see the pointer moving around.