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Classic algorithms
Graphics and Multimedia

Project List

A list of practical projects than anyone can solve in any programming language. These projects are divided in categories and each category has its own folder.

This is a project to learn [insert language here], but feel free to fork it and resolve the project list with any programming language.


Some details about this repo:

  • Maybe some algorithms are not the best. You can add a comment to improved.
  • I will cover some third party libraries.
  • I may be not able to complete all these tasks.
  • There is not a specific order


  • Add unit testing
  • New categories

List of tasks


(Completed!)Find PI to the Nth Digit - Enter a number and have the program generate PI up to that many decimal places. Keep a limit to how far the program will go.

(Completed!)Fibonacci Sequence - Enter a number and have the program generate the Fibonacci sequence to that number or to the Nth number.

(Completed!)Prime Factorization - Have the user enter a number and find all Prime Factors (if there are any) and display them.

Mortgage Calculator - Calculate the monthly payments of a fixed term mortgage over given Nth terms at a given interest rate. Also figure out how long it will take the user to pay back the loan.

Change Return Program - The user enters a cost and then the amount of money given. The program will figure out the change and the number of quarters, dimes, nickels, pennies needed for the change.

Binary to Decimal and Back Converter - Develop a converter to convert a decimal number to binary or a binary number to its decimal equivalent.

Calculator - A simple calculator to do basic operators. Make it a scientific calculator for added complexity.

Unit Converter (temp, currency, volume, mass and more) - Converts various units between one another. The user enters the type of unit being entered, the type of unit they want to convert to and then the value. The program will then make the conversion.

Alarm Clock - A simple clock where it plays a sound after X number of minutes/seconds or at a particular time.

Distance Between Two Cities - Calculates the distance between two cities and allows the user to specify a unit of distance. This program may require finding coordinates for the cities like latitude and longitude.

Credit Card Validator - Takes in a credit card number from a common credit card vendor (Visa, MasterCard, American Express, Discoverer) and validates it to make sure that it is a valid number (look into how credit cards use a checksum).

Tax Calculator - Asks the user to enter a cost and either a country or state tax. It then returns the tax plus the total cost with tax.

Factorial Finder - The Factorial of a positive integer, n, is defined as the product of the sequence n, n-1, n-2, ...1 and the factorial of zero, 0, is defined as being 1. Solve this using both loops and recursion.

Classic algorithms

Collatz Conjecture - Start with a number n > 1. Find the number of steps it takes to reach one using the following process: If n is even, divide it by 2. If n is odd, multiply it by 3 and add 1.

Sorting - Implement two types of sorting algorithms: Merge sort and bubble sort.

Closest pair problem - The closest pair of points problem or closest pair problem is a problem of computational geometry: given n points in metric space, find a pair of points with the smallest distance between them.

(Completed!)Sieve of Eratosthenes - The sieve of Eratosthenes is one of the most efficient ways to find all of the smaller primes (below 10 million or so).


Reverse a String – Enter a string and the program will reverse it and print it out.

Pig Latin – Pig Latin is a game of alterations played on the English language game. To create the Pig Latin form of an English word the initial consonant sound is transposed to the end of the word and an ay is affixed (Ex.: "banana" would yield anana-bay). Read Wikipedia for more information on rules.

Count Vowels – Enter a string and the program counts the number of vowels in the text. For added complexity have it report a sum of each vowel found.

Check if Palindrome – Checks if the string entered by the user is a palindrome. That is that it reads the same forwards as backwards like “racecar”

Count Words in a String – Counts the number of individual words in a string. For added complexity read these strings in from a text file and generate a summary.

Text Editor – Notepad style application that can open, edit, and save text documents. Add syntax highlighting and other features.

RSS Feed Creator – A program which can read in text from other sources and put it in RSS or Atom news format for syndication.

Post it Notes Program – A program where you can add text reminders and post them. You can have the program also add popup reminders.

Quote Tracker (market symbols etc) – A program which can go out and check the current value of stocks for a list of symbols entered by the user. The user can set how often the stocks are checked and the program can show green up and red down arrows to show which direction the stock value has moved.

Guestbook / Journal – A simple application that allows people to add comments or write journal entries. It can allow comments or not and timestamps for all entries. Could also be made into a shout box.

News Ticker and Game Scores – A program which sits on your desktop and aggregates news and game scores from various sources on the net. It then scrolls them across the screen on regular intervals.

Fortune Teller (Horoscope) – A program that checks your horoscope on various astrology sites and puts them together for you each day.

Vigenere / Vernam / Ceasar Ciphers – Functions for encrypting and decrypting data messages. Then send them to a friend.

Random Gift Suggestions – Enter various gifts for certain people when you think of them. When its time to give them a gift (xmas, birthday, anniversary) it will randomly pick one and perhaps places you can get it.

Text to HTML Generator – Converts text files into web HTML files and stylizes them. Great for making online documentation of standard text documentation.

CD Key Generator – Generates a unique key for your applications to use based on some arbitrary algorithm that you can specify. Great for software developers looking to make shareware that can be activated.

Regex Query Tool – A tool that allows the user to enter a text string and then in a separate control enter a regex pattern. It will run the regular expression against the source text and return any matches or flag errors in the regular expression.


FTP Program – A file transfer program which can transfer files back and forth from a remote web sever.

Get Atomic Time from Internet Clock – This program will get the true atomic time from an atomic time clock on the Internet. There are various clocks across the world. Do a search for a list of them.

Chat Application (IRC or MSN Style) – Create a chat application that can create simple chat rooms like on Internet Relay Chat (IRC) or a more direct chatting style like MSN. For added complexity, create your own protocol to facilitate this chatting.

Fetch Current Weather – Get the current weather for a given zip/postal code.

P2P File Sharing App – Create a program like LimeWire, FrostWire, Bearshare, or a torrent style application.

Port Scanner – Enter an IP address and a port range where the program will then attempt to find open ports on the given computer by connecting to each of them. On any successful connections mark the port as open.

Mail Checker (POP3 / IMAP) – The user enters various account information include web server and IP, protocol type (POP3 or IMAP) and the application will check for email on several accounts at a given interval.

Packet Sniffer – A utility program that will read packets coming in and out of the machine along with related information like destination and payload size.

Country from IP Lookup – Enter an IP address and find the country that IP is registered in.

Whois Search Tool – Enter an IP or host address and have it look it up through whois and return the results to you.


Product Inventory Project – Create an application which manages an inventory of products. Create a product class which has a price, id, and quantity on hand. Then create an inventory class which keeps track of various products and can sum up the inventory value.

Movie Store – Manage video rentals and controls when videos are checked out, due to return, overdue fees and for added complexity create a summary of those accounts which are overdue for contact.

Airline / Hotel Reservation System – Create a reservation system which books airline seats or hotel rooms. It charges various rates for particular sections of the plane or hotel. Example, first class is going to cost more than coach. Hotel rooms have penthouse suites which cost more. Keep track of when rooms will be available and can be scheduled.

Student Grade Book Application – Keep track of students (with a student class that has their name, average, and scores) in a class and their grades. Assign their scores on tests and assignments to the students and figure out their average and grade for the class. For added complexity put the students on a bell curve.

Bank Account Manager - Create a class called “Account” which will be an abstract class for three other classes called “CheckingAccount”, “SavingsAccount” and “BusinessAccount”. Manage credits and debits from these accounts through an ATM style program.

Library Catalog – Create a book class with a title, page count, ISBN and whether or not it is checked out or not. Manage a collection of various books and allow the user to check out books or return books. For added complexity generate a report of those books overdue and any fees. Also allow users to put books on reserve.


Web Browser with Tabs – Create a small web browser that allows you to navigate the web and contains tabs which can be used to navigate to multiple web pages at once. For simplicity don’t worry about executing Javascript or other client side code.

Page Scraper – Create an application which connects to a site and pulls out all links, or images, and saves them to a list. For added complexity, organize the indexed content and don’t allow duplicates. Have it put the results into an easily searchable index file.

File Downloader – An application which can download various objects on a page including video streams or all files on a page. Great for pages with a lot of download links.

Bandwidth Monitor – A small utility program that tracks how much data you have uploaded and downloaded from the net during the course of your current online session. See if you can find out what periods of the day you use more and less and generate a report or graph that shows it.

Password Safe – A program which keeps track of passwords for sites or applications and encrypts them with a key so that no one can read them.

Scheduled Auto Login and Action – Make an application which logs into a given site on a schedule and invokes a certain action and then logs out. This can be useful for checking web mail, posting regular content, or getting info for other applications and saving it to your computer.


PDF Generator – An application which can read in a text file, html file or some other file and generates a PDF file out of it. Great for a web based service where the user uploads the file and the program returns a PDF of the file.

Mp3 Tagger – Modify and add ID3v1 tags to MP3 files. See if you can also add in the album art into the MP3 file’s header as well as other ID3v2 tags.

Log File Maker – Make an application which logs various statistics in response to given events. This can be something that logs what an application does, what the system is doing, when something like a file changes etc.

Excel Spreadsheet Exporter – Create an online application which can read in a file and create an Excel Spreadsheet to export back. This can be through CVS or other file formats. For added complexity, see if you can create formula fields as well.

RPG Character Stat Creator – Make a program which will randomly create a character’s stats based on several rules set forth by the user. Have it generate a class, gender, strength/magic/dexterity points, and extra abilities or trades. Have it save it to a file which can then be printed out by a dungeon master.

Image Map Generator – Image maps are those images on the web that have multiple hover points that link to different pages. Such images may include maps or splash pages. See if you can make one where the user specifies an image, clicks hotspots in the image and specify links. It will then generate the HTML code to a file that the user can then copy and paste into their website to make the image map.

File Copy Utility – Create a utility that can do bulk file copying and backups of other files.

Code Snippet Manager – Another utility program that allows coders to put in functions, classes or other tidbits to save for use later. Organized by the type of snippet or language the coder can quickly look up code. For extra practice try adding syntax highlighting based on the language.


SQL Query Analyzer – A utility application which a user can enter a query and have it run against a local database and look for ways to make it more efficient.

Baseball / Other Card Collector – Create an online application for keeping track of a collection of cards. Let the user enter all cards in a set, check off which ones they have, which ones they need and generate lists of cards they are looking for. For extra complexity, have it sum up sets and generate reports on how close they are of completing sets or the current value of a set.

Report Generator – Create a utility that generates a report based on some tables in a database. Generates a sales reports based on the order/order details tables or sums up the days current database activity.

Database Backup Script Maker – A program which reads a database’s objects, relationships, records and stored procedures and creates a .sql file which can then be imported into another database or kept as a backup file to rebuild the database with.

Event Scheduler and Calendar – Make an application which allows the user to enter a date and time of an event, event notes and then schedule those events on a calendar. The user can then browse the calendar or search the calendar for specific events. For added complexity, allow the application to create reoccurrence events that reoccur every day, week, month, year etc.

Budget Tracker – Write an application that keeps track of a household’s budget. The user can add expenses, income, and recurring costs to find out how much they are saving or losing over a period of time. For added complexity allow the user to specify a date range and see the net flow of money in and out of the house budget for that time period.

Address Book – Keep track of various contacts, their numbers, emails and little notes about them like a Rolodex in the database. For extra complexity, allow the user to connect to a website publish their address book based on specific options the user has set.

TV Show Tracker – Got a favorite show you don’t want to miss? Don’t have a PVR or want to be able to find the show to then PVR it later? Make an application which can search various online TV Guide sites, locate the shows/times/channels and add them to a database application. The database/website then can send you email reminders that a show is about to start and which channel it will be on.

Travel Planner System – Make a system that allows users to put together their own little travel itinerary and keep track of the airline / hotel arrangements, points of interest, budget and schedule.

Web Board (Forum) – Create a forum for you and your buddies to post, administer and share thoughts and ideas.

Graphics and Multimedia

Import Picture and Save as Grayscale – A utility that sucks the color right out of an image and saves it. You could add more including adjusting contrast, colorizing and more for added complexity.

Mp3 Player (and Other Formats) – A simple program for playing your favorite music files. For extra complexity see if you can add in playlists and an equalizer.

Bulk Picture Manipulator – This program will take in a directory of pictures and apply a certain effect to them whether it be reducing color count, changing its format, or alter file attributes. For something extra try to see if you can also create a system to tag them.

YouTube Downloader – A program which can download videos to your hard drive from Save the files in various formats including FLV and AVI.

Traffic Light Application – See if you can make your own street light application and then put it into an intersection scenario. Don’t let any cars run the lights and crash into one another!

Signature Maker – Ever seen those web board posts where someone has a generated signature made up? See if you can make a program that allows the user to specify a background, text, colors and alignment to make their own signatures or userbars.


Battleship – Create two game boards and let each player place a number of war ships. Each player can’t see the other person’s board. They then take turns firing at one another by guessing one of the board squares. If the square they guess contains part of a ship, it is a hit. Otherwise it is a miss. They sink a ship when all squares containing that particular ship have been uncovered. The player wins when all their opponents’ ships have been sunk.

Chess and Checkers – Simply put a game of chess or checkers. Try to make it playable online and if you can use a graphical user interface that can also undo or redo a step as well as keep a history of moves for replay.

Hangman – Randomly select a word from a file, have the user guess characters in the word. For each character they guess that is not in the word, have it draw another part of a man hanging in a noose. If the picture is completed before they guess all the characters, they lose.

Crossword Puzzle – Create a crossword puzzle which links words together on common letters. Provide a list of clues for each word and let the user enter fill in the words until the entire crossword is filled in.

Frogger – Get your frog across the river and lanes of traffic by either jumping on logs and lily pads rushing by at different speeds or avoid the automobiles which are also moving at various speeds. Based on the old arcade game.

The game of the live - The Game of Life is a cellular automaton devised by the British mathematician John Horton Conway in 1970. It is the best-known example of a cellular automaton. Conway's game of life is described here:


OpenGL - The goal is to display a smooth shaded triangle with OpenGL

OpenGL Triangle


Color of a screen pixel - Get color information from an arbitrary pixel on the screen, such as the current location of the mouse cursor. The mouse cursor may or may not have to be active in a GUI created by your program. These functions are OS related.



This is the repo where I took the idea. I think that is great but I going to add some new projects and categories and other kind of tasks.

Martyr2’s Mega Project List

Great source for the tasks.

Rosetta Code

A great resource for adding task in many other categories.