Local File System Access (LFSA) for Client Side Web Apps (CSWA)

Local File System Access (LFSA) is:

a tiny web server to allow client side JS access to local file system
a buildling block for Client Side Web Apps (CSWA)
a single Python file
released under CC0 license (public domain)

CSWA

Client Side Web Apps run solely on your device, they are not related to cloud solutions in any way: nobody can pull the plug on you. CSWAs may use LFSA to keep data locally so that you could have complete control of your data.

PSKOV static site generator is the first CSWA to use LFSA.

Install

If you use Linux or macOS released after 2005 (yes, 2005), you only need to download lfsa_1.0.0.py.

If you use Windows 2000 or newer (excluding Windows ME), you need to:

download and install Python 2.3 or newer
download lfsa_1.0.0.py

Run

If you use Linux or macOS, run LFSA in terminal this way:

/path/to/lfsa_1.0.0.py /path/to/dir

Here's how it looks like on macOS Mojave:

LFSA on macOS Mojave

If you use Windows, run LFSA in CMD this way:

C:/path/to/Python/installation/python.exe C:/path/to/lfsa_1.0.0.py C:/path/to/dir

Here's how it looks like on Windows 2000:

LFSA on Windows 2000

Durability

As you noticed, LFSA can run on really old operating systems dating back to 2000. That's intentional: we care about users, so we want to cover as many users as possible.