Top 20 NuGet flat Packages

Open Source library for automatic formatted file read/write operations www.filehelpers.net
ETL Framework for .NET
JSON extension to Cinchoo ETL framework
An ETL framework for .NET
Reads and writes CSV, fixed-length and other flat file formats with a focus on schema definition, configuration and speed. Supports mapping directly between files and classes.
Simple JSON flat file data store
Open Source library for automatic formatted file read/write operations www.filehelpers.net. Unofficial .NET Standard 2.0 / .NET Core port.
FlatFile.FixedLength.Attributes is extension for FlatFile.FixedLength package for attribute-based mapping
FlatFile.Delimited.Attributes is extension for FlatFile.Delimited package for attribute-based mapping
FlatFile is fast-working open-source library for reading/writing plain files
This library is developed to provide similar functionality to Java's java.util.Properties class. It allows for the flat storing of name-value pairs in XML
Flat binding library for Bridge.NET projects.
GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding, directions and maps from Coogle, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yandex, Mapy.cz, Maps.lt, iKarte.lv, NearMap, OviMap, CloudMade, WikiMapia, MapQuest in Windows Forms & ...
Core library for FlatFile.[name].Attributes assemblies
FlatFile.Delimited is fast-working open-source library for delimeted plain files such as cvs and etc.
FlatFile.FixedLength is fast-working open-source library for reading/writing fixed-length plain files
Core library for FlatFile assemblies
GMap.NET is great and Powerful, Free, cross platform, open source .NET control. Enable use routing, geocoding, directions and maps from Coogle, Yahoo!, Bing, OpenStreetMap, ArcGIS, Pergo, SigPac, Yandex, Mapy.cz, Maps.lt, iKarte.lv, NearMap, OviMap, CloudMade, WikiMapia, MapQuest in Windows Forms & ...
Dump any data source (ODBC, OleDB, Sql Native) to a delimited file.
A library to import and export data from plain text files in a Linq compatible way