The effectiveness of these utilities will vary depending on the browser.
Typically these links will execute once you click them unless the link has been sanitized.
You can also paste them into the browsers URL from your clipboard and once your press enter it should execute the code on the current page.
For the BlackBerry 10 webkit browser, you can save them into the browsers bookmarks and reuse them over any other page.
Injects a script into the page pointed at the source of the Bookmarklet Panel.
A button will be fixed to the screen corner that reveals a side panel containing a list of other bookmarklets.
This repo includes a tool to build javascript bookmarklets and store them into indexedDB with additional meta data.
Once they are in the database you can export the database to a file in JSON format.