Open Data Fit is a collection of online services provided by P. Thordarson, where titration data can be analysed. The service can be accessed at (last checked 17.01.2022). For now, supramolecular experiments and a demo version for cell viability are available. The kinetics service is under construction. BindFit, the part focusing on supramolecular titration, was initially provided as free MatLab scripts included in the tutorial review by Thordarson 2011. The latest version supports analysis of NMR and UV/VIS titration of typical 1:1, 2:1 and 1:2 systems, with the python source code being available at (last checked 17.01.2022). New features such as Monte Carlo simulation based statistics are announced for future versions.