The developers of the Adaptive Poisson-Boltzmann Solver (APBS) and Protein DataBank Pre-processing (PDB2PQR) software packages have developed this survey to better understand our user desires. In the continued development of these software, we aim to: (1) maintain and update APBS and PDB2PQR to ensure their suitability for both end-users and software developers in the biomedical community, (2) improve performance and incorporate new features based on new algorithms and user feedback, and (3) improve the robustness of the software and underlying models and reduce the likelihood of errors by inexperienced users.

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* 1. Current Platform, select all that apply

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* 2. Preferred platform, select only one