177 projects for "open source with database" with 2 filters applied:

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  • 1
    Open Tax Solver

    Open Tax Solver

    Calculates income tax form entries, helps do your taxes.

    OTS is a safe, secure, easy-to-use program for calculating Tax Return Form entries, and determining your tax-owed or refund-due, for Federal or State personal income taxes. Includes updated versions for US 1040, Schedules A, B, C, D, and for several states. OTS provides both graphical and textual interfaces for quickly filing out your tax forms. --- Best way to download the correct version for your platform -- go to the OTS WEBSITE: =====> ...
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    3.7 out of 5 stars 10 Reviews
    Downloads: 247 This Week
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  • 2
    pretty-ms

    pretty-ms

    Convert milliseconds to a human readable string

    pretty-ms is a JavaScript utility for converting millisecond values into compact, human-readable durations. It accepts both numbers and BigInt values and automatically breaks durations into appropriate time units. Developers can choose concise output, full unit names, or digital-clock-style colon notation. Precision controls determine how seconds and milliseconds are rounded and displayed. The package can expose microseconds and nanoseconds for sub-millisecond values and can represent...
    Downloads: 1 This Week
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  • 3
    pretty-bytes

    pretty-bytes

    Convert bytes to a human readable string: 1337 → 1.34 kB

    pretty-bytes is a JavaScript utility for converting raw byte counts into compact, human-readable size strings. It uses decimal SI units by default, turning values such as 1337 bytes into 1.34 kB. The library can display bits instead of bytes and can switch to binary prefixes such as KiB when appropriate. Signed output is available for showing positive or negative size differences. Formatting can be localized, and developers can control fractional digits, spacing, and non-breaking spaces....
    Downloads: 0 This Week
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  • 4
    PeaZip

    PeaZip

    Free Zip software and Rar extractor

    PeaZip is a free archiver tool. The application provides an unified, natively portable, cross-platform file manager and archive manager GUI for many Open Source technologies like 7-Zip, FreeArc, PAQ, UPX. Create: 7Z, ARC, Brotl, BZip, GZip, PEA, TAR, WIM, XZ, ZPAQ, ZIP, Zstandard files and more Open and extract 200+ file types: ACE, CAB, DEB, ISO, RAR, ZIPX and more Features of PeaZip includes extract, create and convert multiple archives at once, create self-extracting archives (sfx), split files, strong encryption with two factor authentication, encrypted password manager, secure deletion, find duplicate files, calculate hashes, export task definition as command line script.
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    4.6 out of 5 stars 115 Reviews
    Downloads: 5,733 This Week
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  • 5
    CRC RevEng

    CRC RevEng

    Arbitrary-precision CRC calculator and algorithm finder

    CRC RevEng is a portable, arbitrary-precision CRC calculator and algorithm finder. It calculates CRCs using any of the 113 preset algorithms, or a user-specified algorithm to any width. It calculates reversed CRCs to give the bit pattern that produces a desired forward CRC. CRC RevEng also reverse-engineers any CRC algorithm from sufficient correctly formatted message-CRC pairs and optional known parameters. It comprises powerful input interpretation options. Compliant with Ross Williams'...
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    5.0 out of 5 stars 4 Reviews
    Downloads: 285 This Week
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  • 6
    Calcoo is a scientific calculator (with both RPN and algebraic modes) designed to provide maximum usability.
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    Downloads: 100 This Week
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  • 7

    calc: C-style arbitrary precision system

    Calc: arbitrary precision C-like arithmetic & calculator

    Calc is arbitrary precision C-like arithmetic system that is a calculator, an algorithm prototyper and mathematical research tool. Calc comes with a rich set of builtin mathematical and programmatic functions.
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    5.0 out of 5 stars 5 Reviews
    Downloads: 55 This Week
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  • 8
    Calculator-Scripts

    Calculator-Scripts

    Just a few scripts for pocket calculators.

    Just a few applications for various pocket calculators.
    Downloads: 3 This Week
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  • 9
    APK SHA-256 Verifier

    APK SHA-256 Verifier

    Private, browser-based SHA-256 checksum calculator for APK files

    APK SHA-256 Verifier calculates and compares SHA-256 checksums entirely in the browser. Selected files remain on the device and are processed in 4 MB chunks; no upload or account is required. Paste an expected 64-character digest to receive match, difference, or invalid-format feedback, or compare two existing hashes without loading a file. A matching checksum confirms byte-for-byte identity with the reference, but it does not prove an APK is safe or authentic. The project includes...
    Downloads: 3 This Week
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  • 10
    TRURL

    TRURL

    A suite of RPN calculators and a class library for Object Pascal

    TRURL is a suite of desktop calculators with reverse Polish notation (RPN) written in Object Pascal. Additionally, it comes with a free reusable class library (RPN Engine) as a toolbox for creating your own calculator. TRURL is an acronym for "TRURL is a Reusable Universal RPN Library". Class Libraries: • RPN Engine: Full-featured calculation engine for Pascal-based RPN calculators • Segmitator: Library for virtual seven-segment displays Applications: • TRURL A: Simple demo app...
    Downloads: 2 This Week
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  • 11
    NZMATH

    NZMATH

    Python Calculator on Number Theory, three-birds-one learning material

    NZMATH is a Python calculator on number theory. It is freely available and distributed under the BSD license. All programs are written only by Python so that you can easily see their algorithmic number theory. You can get NZMATH with a single command: % python -m pip install -U nzmath Here % is the command line prompt of Windows or Unix/macOS. This release contains several program corrections and additions obtained by writing a programming "notebook" of the book 'Lectures on...
    Downloads: 1 This Week
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  • 12
    Triangolo

    Triangolo

    Liothyronine dosage calculator

    Calculator software helping to determine L-T4 and L-T3 substitution dosage according to the algorithms provided by the European Thyroid Association (ETA).
    Downloads: 0 This Week
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  • 13
    EVAlgebra -  Clifford algebra calculator

    EVAlgebra - Clifford algebra calculator

    A simple Clifford algebra calculator

    EVAlgebra , symbolic Clifford algebra calculator (geometric algebra) , is an Eigenmath adaptation. EVAlgebra support space dimension from 1 to 4 with arbitrry signature. It is fully documented at evalgebra.org. You may write your own scripts to resolve specific problem.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
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  • 14
    wxProdOp

    wxProdOp

    NMR Product Operator Calculator

    The program does nmr product operator calculations for one, two, three and four spins. Receiver phase cycling is possible in conjunction with pulse phase cycling to simulate coherence pathway selection. An extensive manual and help files are included. Currently running under Linux and Windows.
    Downloads: 0 This Week
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  • 15
    Finanx 12c

    Finanx 12c

    Financial Calculator

    The Finanx 12c is a free software that mimics the HP-12C financial calculator. This software was developed for educational purposes. IT'S NOT RECOMMENDED using this calculator for professional calculations. If you find any bugs, please, let me know. Click "Bugs" in the menu bar to report bugs found.
    5.0 out of 5 stars 7 Reviews
    Downloads: 9 This Week
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  • 16
    Climate Equity Reference Calculator
    This project implements calculations for the Climate Equity Reference Project's Calculator (CERc).
    Downloads: 0 This Week
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  • 17
    PaCal
    ProbAbilistic CALculator - a package for computing with probability distributions
    Downloads: 0 This Week
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  • 18
    Smith Chart Calculator

    Smith Chart Calculator

    Smith Chart Calculator JAVA

    A small tool which allows all basic smith chart actions. This program was created for educational purposes. JAVA RUNTIME REQUIRED Tested on Windows. Some features may not available with other OS (e.g. copy to clipboard) GENERAL PUBLIC LICENSE There is a pdf help file online take a look in the files section. There is also a link available in the program itself.
    4.0 out of 5 stars 2 Reviews
    Downloads: 4 This Week
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  • 19
    FreqLength

    FreqLength

    Wavelength Calculator

    FreqLength is a simple wavelength calculator that takes a given frequency as input and spits out various wavelength values for that frequency (full wave, half wave, etc.) If you'd like to donate there's several ways to do so: PayPal: https://paypal.me/gerowen Bitcoin (BTC): bc1q86c5j7wvf6cw78tf8x3szxy5gnxg4gj8mw4sy2 Monero (XMR): 42ho3m9tJsobZwQDsFTk92ENdWAYk2zL8Qp42m7pKmfWE7jzei7Fwrs87MMXUTCVifjZZiStt3E7c5tmYa9qNxAf3MbY7rD LiberaPay: https://liberapay.com/gerowen
    Downloads: 1 This Week
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  • 20
    HistoryCal

    HistoryCal

    A calculator to work with historical dates and calendars.

    HistoryCal is a practical calculator designed to work with historical dates and calendars. The calculator will allow you to work with many different world calendar schemes and calculate ranges and ages based on these calendars. The calculator also has a script language that allows you to create variations of the built-in calendars: calendars that shift the new year to a different day; hybrid calendars that switch between schemes; local observational calendars that depend on a particular...
    5.0 out of 5 stars 1 Review
    Downloads: 1 This Week
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  • 21

    TILP - TI Linking Program

    TI graphing calculators <-> computer communication software

    TILP (formerly GtkTiLink) can transfer data between Texas Instruments graphing calculators and a computer. It works with all link cables (parallel, serial, Black/Gray/Silver/Direct Link) and it supports the TI-Z80 series (73..86), the TI-eZ80 series (83PCE, 84+CE), the TI-68k series (89, 92, 92+, V200, 89T) and the Nspire series (Nspire Clickpad / Touchpad / CX, both CAS and non-CAS). The project is now managed on Github, https://github.com/debrouxl/tilp_and_gfm . It uses the libti*...
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    5.0 out of 5 stars 5 Reviews
    Downloads: 417 This Week
    Last Update:
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  • 22
    ICE (Interval Calculator for Engineer)

    ICE (Interval Calculator for Engineer)

    Interval Calculator for Engineer

    ICE is a simple mathematical calculator with very useful shortcuts for Engineer: works natively with tolerance, can run Monte Carlo analysis, uses engineer notation, includes most of the day by day functions used by engineers.
    5.0 out of 5 stars 1 Review
    Downloads: 0 This Week
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  • 23
    pafcalc

    pafcalc

    DIY fertilizers calculator for planted acquariums

    This tool allows you to perform some calculations related to DIY and dosing fertilizers in planted aquariums.
    Downloads: 3 This Week
    Last Update:
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  • 24

    Logic Calculator

    A Calculator to perform logical operations

    The Logic Calculator is an application useful to perform logical operations. It has three modes: (1) Evaluation of logic formulae: In this mode we have the basic boolean operations (negation, conjunction, disjunction, conditional and biconditional) so the user can insert the logic formula and the Logic Calculator displays the truth table along with the models of the formula. (2) Logical entailment: In this mode the user can insert a number of premises followed by a number of...
    4.7 out of 5 stars 3 Reviews
    Downloads: 20 This Week
    Last Update:
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  • 25
    D&D HP Monster Calculator

    D&D HP Monster Calculator

    Keep track of all your monsters during your encounters in a simple way

    Allows you to quickly manage the HP of multiple monsters as well as keep quick notes about the monsters!
    Downloads: 0 This Week
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