1) For simple crypto middleware, have a look at OpenSC - it was created precisely for solving the proprietary middleware problem 2) All the software used in Est

1) For simple crypto middleware, have a look at OpenSC - it was created precisely for solving the proprietary middleware problem 2) All the software used in Estonia is open source, available on Github (@open-eid) (same for Belgium, Portugal etc). I can only say that open source eID software does not happen "just because" but needs a bit of pushing. Might take a few years and some personal input, but the outcome shall be good. 3) There are efforts for collaboration on universal and open standards and interfaces (W3C for example) that should make the proprietary vendor locked solutions a nuisance of history