Here are some excellent companion tools for FLEx, which are designed to do things you need to accomplish, which FLEx doesn’t cover:

Automated Backup
MyWorkSafe

Import-related
SheetSwiper
SOLID

Text transcription and time-alignment
SayMore
ELAN

Phonology
Phonology Assistant

Publishing
Pathway
PDFDroplet
XLingPaper
FLEx LibreOffice interlinear exporter
OpenOffice Linguistic Tools (for OpenOffice and LibreOffice)

Simpler user interface for entering lexical data
WeSay

Send/Receive
ChorusHub

Various uses
FLExTools
Kratylos