log4net
log4net is a tool to help the programmer output log statements to a variety of output targets. In case of problems with an application, it is helpful to enable logging so that the problem can be located. With log4net it is possible to enable logging at runtime without modifying the application binary. The log4net package is designed so that log statements can remain in shipped code without incurring a high performance cost. It follows that the speed of logging (or rather not logging) is crucial. At the same time, log output can be so voluminous that it quickly becomes overwhelming. One of the distinctive features of log4net is the notion of hierarchical loggers. Using these loggers it is possible to selectively control which log statements are output at arbitrary granularity. log4net is designed with two distinct goals in mind: speed and flexibility
3.4.0
421M downloads/mo
#136 most downloaded on NuGet
What this package is like to depend on
Last release 2 days ago
21 Aug 2026
Ships fairly regularly
a new release about every 2 months
We could not find this project's source
its registry metadata names no repository we can read
12 versions withdrawn
withdrawn after publishing
127 years old
31 releases · first in 1900
4 releases in the last 12 months
see the full history below
Release timeline
31 releases · Jan 1900 to Aug 2026Releases
latest 31-
3.4.021 Aug 2026Source not found, so nothing to read for this version
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3.3.225 Jun 2026Source not found, so nothing to read for this version
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3.3.119 Apr 2026Source not found, so nothing to read for this version
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3.3.020 Feb 2026Source not found, so nothing to read for this version
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3.2.022 Aug 2025Source not found, so nothing to read for this version
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3.1.012 May 2025Source not found, so nothing to read for this version
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3.0.421 Feb 2025Source not found, so nothing to read for this version
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3.0.307 Nov 2024Source not found, so nothing to read for this version
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3.0.221 Oct 2024Source not found, so nothing to read for this version
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3.0.127 Sep 2024Source not found, so nothing to read for this version
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3.0.015 Sep 2024Source not found, so nothing to read for this version
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2.0.1725 Mar 2024Source not found, so nothing to read for this version
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2.0.1608 Mar 2024Source not found, so nothing to read for this version
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2.0.1504 Aug 2022Source not found, so nothing to read for this version
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2.0.1431 Dec 2021Source not found, so nothing to read for this version
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2.0.1302 Nov 2021Source not found, so nothing to read for this version
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2.0.1226 Oct 2020Source not found, so nothing to read for this version
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2.0.1123 Sep 2020Source not found, so nothing to read for this version
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2.0.1012 Sep 2020Source not found, so nothing to read for this version
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2.0.901 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.801 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.701 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.601 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.501 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.401 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.301 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.201 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.101 Jan 1900 withdrawnSource not found, so nothing to read for this version
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2.0.001 Jan 1900 withdrawnSource not found, so nothing to read for this version
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1.2.1101 Jan 1900 withdrawnSource not found, so nothing to read for this version
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1.2.1001 Jan 1900 withdrawnSource not found, so nothing to read for this version