# Flex Solutions Library (Flex UI 1.x.x)

> \[!NOTE]
>
> The plugin solutions outlined in the Solutions Library are meant for Flex UI 1.x.x, which [reached End of Life on June 30, 2024](/docs/flex/flex-ui-eol-reference). To build on a current version, we recommend you [upgrade to Flex UI 2.x.x](/docs/flex/developer/ui/migration-guide) and use the [Flex Plugin Library](/docs/flex/developer/plugins/plugin-library) instead. The Plugin Library features many of the same plugins but in a ready-to-use format you can install from the Flex Admin dashboard.

The Solutions Library is a set of end-to-end reference guides for common contact center use cases. These solutions can help you build and deploy faster on your Flex application:

* [Chat and SMS Transfers](/docs/flex/solutions-library/chat-and-sms-transfers) - Transfer chats and SMS between agents.
* [Pause and Resume Call Recording](/docs/flex/solutions-library/pause-resume-recording) - Enable agents to pause and resume customer call recordings.
* [Preview Dialer for Outbound Campaigns](/docs/flex/solutions-library/preview-dialer-outbound-campaigns)- Automate and manage your outbound campaigns.
* [Queued Callback and Voicemail](/docs/flex/solutions-library/queued-callback-and-voicemail) - Automate agent callback requests from customers.
* [Selectable Chat Messages](/docs/flex/solutions-library/selectable-chat-messages) - Automate web chat experience with a self-service.
* [Supervisor Barge-In and Coach](/docs/flex/solutions-library/supervisor-barge-in-coach) - Enable supervisors to observe and coach agents on live calls with customers.