mtail - extract whitebox monitoring data from application logs for collection in a timeseries database

•    Go

mtail is a tool for extracting metrics from application logs to be exported into a timeseries database or timeseries calculator for alerting and dashboarding.It aims to fill a niche between applications that do not export their own internal state, and existing monitoring systems, without patching those applications or rewriting the same framework for custom extraction glue code.

insect - High precision scientific calculator with support for physical units

•    PureScript

A high precision scientific calculator with full support for physical units. Operators: addition (+), subtraction (-), multiplication (*, ·, ×), division (/, ÷, per), exponentiation (^, **). Full list: see Reference below.

kalker - Kalker/kalk is a calculator with math syntax that supports user-defined variables and functions, complex numbers, and estimation of derivatives and integrals

•    Rust

Kalker (or "kalk") is a calculator program/website that supports user-defined variables, functions, derivation, and integration. It runs on Windows, macOS, Linux, Android, and in web browsers (with WebAssembly). Pre-compiled binaries for Linux, Windows, and macOS (64-bit) are available in the releases page.

dentaku - math and logic formula parser and evaluator

•    Ruby

Dentaku is a parser and evaluator for a mathematical and logical formula language that allows run-time binding of values to variables referenced in the formulas. It is intended to safely evaluate untrusted expressions without opening security holes. For maximum CS geekery, bind is an alias of store.

CEmu - Third-party TI-84 Plus CE / TI-83 Premium CE emulator, focused on developer features

•    C++

CEmu is a third-party TI-84 Plus CE / TI-83 Premium CE calculator emulator, focused on developer features. CEmu works natively on Windows, macOS, and Linux. For performance and portability, the core is programmed in C and its customizable GUI in C++ with Qt. Note: CEmu is not a TI product nor is it TI-endorsed/affiliated. If you need an official TI CE emulator, TI-SmartView™ CE is for you.

calcflow - A virtual reality tool for mathematical modeling!

•    Common

Today, the most common tool for complex maths visualization in the classroom is the TI-84+. Scientists, researchers, and other professionals who implement calculus in their work may rely on more complex toolkits like MATLAB. Though these tools offer broader functionality, they are similarly if not more unintuitive than their handheld counterparts. Visualization plays a crucial role in understanding, mastering, and improving upon mathematical concepts, but today's standard interfaces frustrate and alienate many individuals, creating an excessively high barrier of entry to higher level math studies. Calcflow shatters this interfacial bottleneck by enabling users to interact directly with complex equations in physical space. Users can manipulate inputs and parameters and observe changes to 3D visualizations in realtime.

NETworkManager - A powerful tool for managing networks and troubleshoot network problems!

•    CSharp

Check the Issues if the issue/feature request has already been reported. If not, submit a new issue. Provide as many informations as you can. This software is published under the GNU General Public License v3.

Qalculate! - the ultimate desktop calculator

•    C++

Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation). Features include a large library of customizable functions, unit calculations and conversion, physical constants, symbolic calculations (including integrals and equations), arbitrary precision, uncertainty propagation, interval arithmetic, plotting, and a user-friendly interface (GTK+ and CLI).

Energy Efficiency Calculator Webpart

Understanding how energy is used in your home is the first step toward managing your energy costs. Enter how many of each item you have in each room and the approximate hours per week that the item is used. the calculator will estimate you energy costs in a month.

Pocket E6B

A small PDA application for pilots or navigators to use for flight planning. The application performs the common calculations of an E6B.

Calc#

•    DotNet

Calc# is a powerfull command line driven "calculator" aplication written in c#. Currently it is under heavy development, so it's much like useless for every day usage.

NN Crew Calculator

Calculator project to help learn C#

Windows Phone 7 - Eurocalculator

A simple Windows Phone 7 application for calculating how much krones would sth do in Euros.

Sum

Sum will be the best application in parsing and calculating equations results.

WPF Data Editors

WPF Data Editor controls contains most of editor controls in WPF.

Nanocalc - Lightweight Scientific Calculator

•    C++

Nanocalc - Lightweight Scientific Calculator is a simple to use, easy to integrate and extremely efficient and fast mathematical expression parsing and evaluation engine. The parsing engine supports various kinds of functional, logic processing semantics and is very easily ext...

ForcePlot

Force plot is a user friendly graphing calculator which uses brute-force computing. It can plot difficult equations that many popular programs cannot plot.

Google Calendar Total Hour Calculator

•    CSharp

calculate total hour for google calendar

ABCalculator

•    CSharp

a simple calculator

Date Calculator

Date Calculator is a small desktop utility developed using Windows Forms .NET technology. This utility is analogous to the "Date calculation" module in Windows 7 Calculator. This utility can be used for numerous date related calculations like calculating age or work experience.