nishanth_v's blog

[Coder's Calendar] Chrome extension for Competitive Programming
By nishanth_v, 10 years ago, In English

Hi all,

Coder's Calendar is a Chrome extension that I've made, which displays details of upcoming and ongoing coding competitions.

It currently lists contests on Codeforces, Topcoder, Hackerearth, Hackerrank, Codechef, CSAcademy, AtCoder & Kaggle.

Coder's Calendar is available for download at:

Firefox Users: https://github.com/nishanthvijayan/CoderCalendar-Extensions#firefox

Star the project on Github to show your support:
https://github.com/nishanthvijayan/CoderCalendar-Extensions
https://github.com/nishanthvijayan/CoderCalendar-API

Please comment if you find any bug or if you don't like any feature.

UPDATE: As requested by many users, support for AtCoder, CSAcademy has been added Coder Calendar

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Comments Comments (68)
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10 years ago, # |
  Vote: I like it +5 Vote: I do not like it

Sounds great! I'll wait to see how many upvotes you get and then I'll probably install it! Thanks for your effort!

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    10 years ago, # ^ |
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    So...what do you think now? :)

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      10 years ago, # ^ |
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      It's really good, but I wish there was a way to filter contests by their site or something like that since there are a lot of contests in the list!

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10 years ago, # |
  Vote: I like it +7 Vote: I do not like it

Great feature man!! +1 from me!

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    10 years ago, # ^ |
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    Thank You.I would be glad if you could rate/review on the corresponding webstore.

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10 years ago, # |
  Vote: I like it +1 Vote: I do not like it

wow! thank you!

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10 years ago, # |
  Vote: I like it +6 Vote: I do not like it

Great idea! It would be nice if we could select which contest(site) we would like to see in calendar.

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    10 years ago, # ^ |
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    Yes,I'm planning on adding an options page where you select the contest sites.It'll be added in the next update.Thank you.

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    10 years ago, # ^ |
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    And it would be nicer if we could remove some contests according to will. Like the Project Euler contest on Hackerrank. No use keeping them in the top 2-3 always.

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    10 years ago, # ^ |
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    Done!

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      10 years ago, # ^ |
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      Good job. Now I have other updates for you to do, of course if you want to upgrade your application.

      First, GUI of individual contest could be more user friendly. What I mean about it is that icon of site could be on left side (because we read left to right, so we could see that first), next you can change labels like start, duration and end with some icons like start button, stop button and some watch. You could add and end time, too. You don't need day of contest it is unnecessary, because everything is thrown in a small space and we need just one second to move mouse down and click on clock to see a day.

      And second big upgrade would be maybe some button for calendar where we could see all contests for one month.

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        10 years ago, # ^ |
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        Placing the icons on the right felt more natural to me,probably because I'm left-handed I guess. :) Let me see what I can do.It might take a week or more to make all these changes,I'm kinda busy with exams right now. Thank you for the reply.

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10 years ago, # |
  Vote: I like it +7 Vote: I do not like it

This project is a lot similar to this one. Even the app icons are similar.

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    10 years ago, # ^ |
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    Yes,the idea is quite similar.I came to know about Challenge Hunt just a few days ago.I does seem rather nice. But I think it is available only in chrome.

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      9 years ago, # ^ |
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      Your app seems to be doing a lot better from what I've seen in the comments. I was using Challenge Hunt so far but I'll give it a go.

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10 years ago, # |
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The best

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10 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Superb app! But some contests like code jam rounds / TCO rounds are not shown. Maybe you can add important contests like these.

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    10 years ago, # ^ |
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    Sure.I'll try adding them in the next update.

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    10 years ago, # ^ |
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    Done.Update the extension to see the changes.Do let me know if there are any further issues.

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      10 years ago, # ^ |
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      Wonderful! Great work :)

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      10 years ago, # ^ |
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      Another feature that might be useful: desktop popup before start of each match.

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10 years ago, # |
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WOW! Great idea and great realization.

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    10 years ago, # ^ |
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    Thank You.I would be grateful if you could rate/review the addon or star the github repo.

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10 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Great work man !! Since you`re already adding the customization option , this will be of great help to coding community .

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10 years ago, # |
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Such a simple but a brilliant idea! Thanks a lot, good job man.

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    10 years ago, # ^ |
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    Thanks mate.I would be grateful if you could rate/review the addon or star the github repo.

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      10 years ago, # ^ |
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      I've already done it. Good luck man :)

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10 years ago, # |
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How can i make this add-on work on Opera?

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    10 years ago, # ^ |
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    I'm planning to publish this on Opera soon.But till then you will have to use this workaround.

    1.Go to https://github.com/nishanthvijayan/CoderCalender
    2.Download the project as zip or use git clone.
    3.Now open Opera.Click View->Show Extensions
    4.If Developer mode is not enabled,enable it.
    5.Now click 'Load Unpacked Extension' and open the 'chrome' folder inside the project folder.

    This should install the addon on opera.Worked for me.( using Opera 28.0)

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10 years ago, # |
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really awesome. thanks. :)

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    10 years ago, # ^ |
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    Thanks mate.I would be grateful if you could rate/review the addon or star the github repo.

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10 years ago, # |
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its so good but some of the contest are may be not showed. After all its so good and may be if there have any bug then you can remove it.

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    10 years ago, # ^ |
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    There is an options page,where you can disable contests from a particular website.

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10 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Super! I hope I won't ever miss TC again thanks to that extension and I won't even need chrome :P

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9 years ago, # |
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please add hackerrank contests also,they are not showed in the calendar

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    9 years ago, # ^ |
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    Hackerrank contests are already there..If you didn't see any it must have been sone temporary server error..Please check again.

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      9 years ago, # ^ |
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      i have been using it for the last 4 weeks.....previously it used to show contests from hackerrank,but from the last 2-3 weeks i am not seeing any contests from that site.

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        9 years ago, # ^ |
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        Huh..that's weird..Check the settings and see if you have accidentally switched HackerRank off..

        If its ON,try switching all options OFF and then ON and see if its fixed.I once noticed a similar bug but I was not able to reproduce it,so I just let it go.

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          9 years ago, # ^ |
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          yeah,thanks...that worked

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            9 years ago, # ^ |
              Vote: I like it +1 Vote: I do not like it

            As it turns out,it was an important bug and I'm pretty sure I've fixed it now.Thanks a lot for reporting it.

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9 years ago, # |
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Good job (Y) !!

You can make "Add to calendar" button add the event automatically to Google Calendar without opening the calendar's web page and waiting the user to press "Save" ... as an update.

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    9 years ago, # ^ |
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    I'm not sure if it's possible but let me see what I can do. And if the user is not signed in there's bo other way.

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9 years ago, # |
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When I close Firefox and open again calendar item disappears. But when I disables and enables it appears. Can't it start automatically ?!

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    9 years ago, # ^ |
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    Are you saying that the extension icon disappear every time you close and open Firefox? Or it the contest entries that disappear?

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      9 years ago, # ^ |
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      Extension icon disappears.

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        9 years ago, # ^ |
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        Seems to me like its a Firefox problem.I've never had such a problem before nor has anyone ever reported anything similar.Try uninstalling the extension and installing it again.

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          9 years ago, # ^ |
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          Tried but didn't fix. Maybe I should uninstall and install Firefox

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8 years ago, # |
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The website at http://codingcalendar.com seems to be down. Is it on purpose or an accident? I liked the website more, have opened an issue for it. https://github.com/nishanthvijayan/CoderCalendar/issues/43

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8 years ago, # |
  Vote: I like it +8 Vote: I do not like it

Would that be possible to add AtCoder and CSAcademy here?

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    6 years ago, # ^ |
      Vote: I like it +3 Vote: I do not like it

    Both AtCoder & CSAcademy are supported now

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      4 years ago, # ^ |
        Vote: I like it +3 Vote: I do not like it

      AtCoder contests hyperlinks are not working, please look into the issue. I am using: 1. Google Chrome Version 84.0.4147.105 (Official Build) (64-bit) 2. Coder's Calender 1.5.1 3. macOS Catalina 10.15.6

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7 years ago, # |
  Vote: I like it +9 Vote: I do not like it

deprecated in firefox 57 (Quantum release), update the plugin!

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7 years ago, # |
  Vote: I like it +1 Vote: I do not like it

Not compatible with Firefox Quantum

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6 years ago, # |
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Please add AtCoder too. Great job btw!

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6 years ago, # |
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Good job. Add Atcoder if possible.

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    6 years ago, # ^ |
      Vote: I like it +6 Vote: I do not like it

    Hi atCoder contests are now avialable on CoderCalendar

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6 years ago, # |
  Vote: I like it +6 Vote: I do not like it

It doesn't show Topcoder contests anymore :(

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6 years ago, # |
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Not all Atcoder contests are shown, please look into it.

Besides thank you for making this tool, i am using this tool for more than 1 year and it is awesome.

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4 years ago, # |
  Vote: I like it +3 Vote: I do not like it

i am not able to see contests of codechef even when i have selected it in the websites

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3 years ago, # |
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It has stopped working -_-

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12 months ago, # |
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this is not showing live contests or upcoming contests, only the subscribe feature is working

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7 months ago, # |
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Doesn't work now!

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