diff --git a/event/logging/egokit/gokit.go b/event/logging/egokit/gokit.go
new file mode 100644
index 0000000..99f42c1
--- /dev/null
+++ b/event/logging/egokit/gokit.go
@@ -0,0 +1,50 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package egokit provides a go-kit logger for events.
+package egokit
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/go-kit/kit/log"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+)
+
+type logger struct {
+}
+
+// NewLogger returns a logger.
+func NewLogger() log.Logger {
+	return &logger{}
+}
+
+// Log writes a structured log message.
+// If the first argument is a context.Context, it is used
+// to find the exporter to which to deliver the message.
+// Otherwise, the default exporter is used.
+func (l *logger) Log(keyvals ...interface{}) error {
+	ctx := context.Background()
+	if len(keyvals) > 0 {
+		if c, ok := keyvals[0].(context.Context); ok {
+			ctx = c
+			keyvals = keyvals[1:]
+		}
+	}
+	b := event.To(ctx)
+	var msg string
+	for i := 0; i < len(keyvals); i += 2 {
+		key := keyvals[i].(string)
+		value := keyvals[i+1]
+		if key == "msg" || key == "message" {
+			msg = fmt.Sprint(value)
+		} else {
+			b.With(keys.Value(key).Of(value))
+		}
+	}
+	b.Log(msg)
+	return nil
+}
diff --git a/event/logging/egokit/gokit_test.go b/event/logging/egokit/gokit_test.go
new file mode 100644
index 0000000..e2cc659
--- /dev/null
+++ b/event/logging/egokit/gokit_test.go
@@ -0,0 +1,36 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package egokit
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+func Test(t *testing.T) {
+	log := NewLogger()
+	e, h := internal.NewTestExporter()
+	ctx := event.WithExporter(context.Background(), e)
+	log.Log(ctx, "msg", "mess", "level", 1, "name", "n/m", "traceID", 17, "resource", "R")
+	want := &event.Event{
+		ID:      1,
+		At:      internal.TestAt,
+		Message: "mess",
+		Labels: []event.Label{
+			keys.Value("level").Of(1),
+			keys.Value("name").Of("n/m"),
+			keys.Value("traceID").Of(17),
+			keys.Value("resource").Of("R"),
+		},
+	}
+	if diff := cmp.Diff(want, &h.Got); diff != "" {
+		t.Errorf("mismatch (-want, +got):\n%s", diff)
+	}
+}
diff --git a/event/logging/elogr/logr.go b/event/logging/elogr/logr.go
new file mode 100644
index 0000000..ba3b405
--- /dev/null
+++ b/event/logging/elogr/logr.go
@@ -0,0 +1,113 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package elogr is a logr implementation that uses events.
+package elogr
+
+import (
+	"context"
+
+	"github.com/go-logr/logr"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+type logger struct {
+	exporter  *event.Exporter
+	builder   event.Builder // never delivered, only cloned
+	nameSep   string
+	name      string
+	verbosity int
+}
+
+var _ logr.Logger = (*logger)(nil)
+
+func NewLogger(ctx context.Context, nameSep string) logr.Logger {
+	return &logger{
+		builder: event.To(ctx),
+		nameSep: nameSep,
+	}
+}
+
+// WithName adds a new element to the logger's name.
+// Successive calls with WithName continue to append
+// suffixes to the logger's name.  It's strongly recommended
+// that name segments contain only letters, digits, and hyphens
+// (see the package documentation for more information).
+func (l *logger) WithName(name string) logr.Logger {
+	l2 := *l
+	if l.name == "" {
+		l2.name = name
+	} else {
+		l2.name = l.name + l.nameSep + name
+	}
+	return &l2
+}
+
+// V returns an Logger value for a specific verbosity level, relative to
+// this Logger.  In other words, V values are additive.  V higher verbosity
+// level means a log message is less important.  It's illegal to pass a log
+// level less than zero.
+func (l *logger) V(level int) logr.Logger {
+	l2 := *l
+	l2.verbosity += level
+	return &l2
+}
+
+// Enabled tests whether this Logger is enabled.  For example, commandline
+// flags might be used to set the logging verbosity and disable some info
+// logs.
+func (l *logger) Enabled() bool {
+	return true
+}
+
+// addLabels adds labels for keysAndValues to b.
+func addLabels(b event.Builder, keysAndValues []interface{}) {
+	for i := 0; i < len(keysAndValues); i += 2 {
+		b.With(newLabel(keysAndValues[i], keysAndValues[i+1]))
+	}
+}
+
+// Info logs a non-error message with the given key/value pairs as context.
+//
+// The msg argument should be used to add some constant description to
+// the log line.  The key/value pairs can then be used to add additional
+// variable information.  The key/value pairs should alternate string
+// keys and arbitrary values.
+func (l *logger) Info(msg string, keysAndValues ...interface{}) {
+	l.log(msg, l.builder.Clone(), keysAndValues)
+}
+
+// Error logs an error, with the given message and key/value pairs as context.
+// It functions similarly to calling Info with the "error" named value, but may
+// have unique behavior, and should be preferred for logging errors (see the
+// package documentations for more information).
+//
+// The msg field should be used to add context to any underlying error,
+// while the err field should be used to attach the actual error that
+// triggered this log line, if present.
+func (l *logger) Error(err error, msg string, keysAndValues ...interface{}) {
+	l.log(msg, l.builder.Clone().With(internal.ErrorKey.Of(err)), keysAndValues)
+}
+
+func (l *logger) log(msg string, b event.Builder, keysAndValues []interface{}) {
+	b.With(internal.LevelKey.Of(l.verbosity)) // TODO: Convert verbosity to level.
+	b.With(internal.NameKey.Of(l.name))
+	addLabels(b, keysAndValues)
+	b.Log(msg)
+}
+
+// WithValues adds some key-value pairs of context to a logger.
+// See Info for documentation on how key/value pairs work.
+func (l *logger) WithValues(keysAndValues ...interface{}) logr.Logger {
+	l2 := *l
+	l2.builder = l2.builder.Clone()
+	addLabels(l2.builder, keysAndValues)
+	return &l2
+}
+
+func newLabel(key, value interface{}) event.Label {
+	return keys.Value(key.(string)).Of(value)
+}
diff --git a/event/logging/elogr/logr_test.go b/event/logging/elogr/logr_test.go
new file mode 100644
index 0000000..85054c2
--- /dev/null
+++ b/event/logging/elogr/logr_test.go
@@ -0,0 +1,36 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package elogr
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+func TestInfo(t *testing.T) {
+	e, th := internal.NewTestExporter()
+	log := NewLogger(event.WithExporter(context.Background(), e), "/").WithName("n").V(3)
+	log = log.WithName("m")
+	log.Info("mess", "traceID", 17, "resource", "R")
+	want := &event.Event{
+		At:      internal.TestAt,
+		ID:      1,
+		Message: "mess",
+		Labels: []event.Label{
+			internal.LevelKey.Of(3),
+			internal.NameKey.Of("n/m"),
+			keys.Value("traceID").Of(17),
+			keys.Value("resource").Of("R"),
+		},
+	}
+	if diff := cmp.Diff(want, &th.Got); diff != "" {
+		t.Errorf("mismatch (-want, +got):\n%s", diff)
+	}
+}
diff --git a/event/logging/elogrus/logrus.go b/event/logging/elogrus/logrus.go
new file mode 100644
index 0000000..ebc2f73
--- /dev/null
+++ b/event/logging/elogrus/logrus.go
@@ -0,0 +1,54 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package elogrus provides a logrus Formatter for events.
+// To use for the global logger:
+//   logrus.SetFormatter(elogrus.NewFormatter(exporter))
+//   logrus.SetOutput(io.Discard)
+// and for a Logger instance:
+//   logger.SetFormatter(elogrus.NewFormatter(exporter))
+//   logger.SetOutput(io.Discard)
+//
+// If you call elogging.SetExporter, then you can pass nil
+// for the exporter above and it will use the global one.
+package elogrus
+
+import (
+	"context"
+
+	"github.com/sirupsen/logrus"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+type formatter struct{}
+
+func NewFormatter() logrus.Formatter {
+	return &formatter{}
+}
+
+var _ logrus.Formatter = (*formatter)(nil)
+
+// Format writes an entry to an event.Exporter. It always returns nil (see below).
+// If e.Context is non-nil, Format gets the exporter from the context. Otherwise
+// it uses the default exporter.
+//
+// Logrus first calls the Formatter to get a []byte, then writes that to the
+// output. That doesn't work for events, so we subvert it by having the
+// Formatter export the event (and thereby write it). That is why the logrus
+// Output io.Writer should be set to io.Discard.
+func (f *formatter) Format(e *logrus.Entry) ([]byte, error) {
+	ctx := e.Context
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	b := event.To(ctx).At(e.Time)
+	b.With(internal.LevelKey.Of(int(e.Level))) // TODO: convert level
+	for k, v := range e.Data {
+		b.With(keys.Value(k).Of(v))
+	}
+	b.Log(e.Message)
+	return nil, nil
+}
diff --git a/event/logging/elogrus/logrus_test.go b/event/logging/elogrus/logrus_test.go
new file mode 100644
index 0000000..187ec9a
--- /dev/null
+++ b/event/logging/elogrus/logrus_test.go
@@ -0,0 +1,46 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package elogrus
+
+import (
+	"context"
+	"io"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"github.com/google/go-cmp/cmp/cmpopts"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+func Test(t *testing.T) {
+	e, th := internal.NewTestExporter()
+	log := logrus.New()
+	log.SetFormatter(NewFormatter())
+	log.SetOutput(io.Discard)
+	// adding WithContext panics, because event.FromContext assumes
+	ctx := event.WithExporter(context.Background(), e)
+	log.WithContext(ctx).WithField("traceID", 17).WithField("resource", "R").Info("mess")
+
+	want := &event.Event{
+		ID:      1,
+		Message: "mess",
+		Labels: []event.Label{
+			internal.LevelKey.Of(4),
+			keys.Value("traceID").Of(17),
+			keys.Value("resource").Of("R"),
+		},
+	}
+	th.Got.At = want.At
+	// logrus fields are stored in a map, so we have to sort to overcome map
+	// iteration indeterminacy.
+	less := func(a, b event.Label) bool { return a.Name < b.Name }
+	if diff := cmp.Diff(want, &th.Got, append([]cmp.Option{cmpopts.SortSlices(less)})...); diff != "" {
+		t.Errorf("mismatch (-want, +got):\n%s", diff)
+	}
+
+}
diff --git a/event/logging/ezap/zap.go b/event/logging/ezap/zap.go
new file mode 100644
index 0000000..b9ab118
--- /dev/null
+++ b/event/logging/ezap/zap.go
@@ -0,0 +1,148 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// ezap provides an implementation of zapcore.Core for events.
+// To use globally:
+//     zap.ReplaceGlobals(zap.New(NewCore(exporter)))
+//
+// If you call elogging.SetExporter, then you can pass nil
+// for the exporter above and it will use the global one.
+package ezap
+
+import (
+	"context"
+	"fmt"
+	"math"
+	"reflect"
+	"time"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+type core struct {
+	builder event.Builder // never delivered, only cloned
+}
+
+var _ zapcore.Core = (*core)(nil)
+
+func NewCore(ctx context.Context) zapcore.Core {
+	return &core{
+		builder: event.To(ctx),
+	}
+}
+
+func (c *core) Enabled(level zapcore.Level) bool {
+	return true
+}
+
+func (c *core) With(fields []zapcore.Field) zapcore.Core {
+	c2 := *c
+	c2.builder = c2.builder.Clone()
+	addLabels(c2.builder, fields)
+	return &c2
+}
+
+func (c *core) Write(e zapcore.Entry, fs []zapcore.Field) error {
+	b := c.builder.Clone().
+		At(e.Time).
+		With(internal.LevelKey.Of(int(e.Level))). // TODO: convert zap level to general level
+		With(internal.NameKey.Of(e.LoggerName))
+	// TODO: add these additional labels more efficiently.
+	if e.Stack != "" {
+		b.With(keys.String("stack").Of(e.Stack))
+	}
+	if e.Caller.Defined {
+		b.With(keys.String("caller").Of(e.Caller.String()))
+	}
+	addLabels(b, fs)
+	b.Log(e.Message)
+	return nil
+}
+
+func (c *core) Check(e zapcore.Entry, ce *zapcore.CheckedEntry) *zapcore.CheckedEntry {
+	return ce.AddCore(e, c)
+}
+
+func (c *core) Sync() error { return nil }
+
+// addLabels creates a new []event.Label with the given labels followed by the
+// labels constructed from fields.
+func addLabels(b event.Builder, fields []zap.Field) {
+	for i := 0; i < len(fields); i++ {
+		b.With(newLabel(fields[i]))
+	}
+}
+
+func newLabel(f zap.Field) event.Label {
+	switch f.Type {
+	case zapcore.ArrayMarshalerType, zapcore.ObjectMarshalerType, zapcore.BinaryType, zapcore.ByteStringType,
+		zapcore.Complex128Type, zapcore.Complex64Type, zapcore.TimeFullType, zapcore.ReflectType,
+		zapcore.ErrorType:
+		return keys.Value(f.Key).Of(f.Interface)
+	case zapcore.DurationType:
+		// TODO: avoid this allocation?
+		return keys.Value(f.Key).Of(time.Duration(f.Integer))
+	case zapcore.Float64Type:
+		return keys.Float64(f.Key).Of(math.Float64frombits(uint64(f.Integer)))
+	case zapcore.Float32Type:
+		return keys.Float32(f.Key).Of(math.Float32frombits(uint32(f.Integer)))
+	case zapcore.BoolType:
+		b := false
+		if f.Integer != 0 {
+			b = true
+		}
+		return keys.Bool(f.Key).Of(b)
+	case zapcore.Int64Type:
+		return keys.Int64(f.Key).Of(f.Integer)
+	case zapcore.Int32Type:
+		return keys.Int32(f.Key).Of(int32(f.Integer))
+
+		//, zapcore.Int16Type, zapcore.Int8Type,
+		// 		zapcore.Uint64Type, zapcore.Uint32Type, zapcore.Uint16Type, zapcore.Uint8Type, zapcore.UintptrType:
+		//		return (f.Key).Of(uint64(f.Integer))
+	case zapcore.StringType:
+		return keys.String(f.Key).Of(f.String)
+	case zapcore.TimeType:
+		key := keys.Value(f.Key)
+		t := time.Unix(0, f.Integer)
+		if f.Interface != nil {
+			t = t.In(f.Interface.(*time.Location))
+		}
+		return key.Of(t)
+	case zapcore.StringerType:
+		return keys.String(f.Key).Of(stringerToString(f.Interface))
+	case zapcore.NamespaceType:
+		// TODO: ???
+		return event.Label{}
+	case zapcore.SkipType:
+		// TODO: avoid creating a label at all in this case.
+		return event.Label{}
+	default:
+		panic(fmt.Sprintf("unknown field type: %v", f))
+	}
+}
+
+// Adapter from encodeStringer in go.uber.org/zap/zapcore/field.go.
+func stringerToString(stringer interface{}) (s string) {
+	// Try to capture panics (from nil references or otherwise) when calling
+	// the String() method, similar to https://golang.org/src/fmt/print.go#L540
+	defer func() {
+		if err := recover(); err != nil {
+			// If it's a nil pointer, just say "<nil>". The likeliest causes are a
+			// Stringer that fails to guard against nil or a nil pointer for a
+			// value receiver, and in either case, "<nil>" is a nice result.
+			if v := reflect.ValueOf(stringer); v.Kind() == reflect.Ptr && v.IsNil() {
+				s = "<nil>"
+				return
+			}
+			s = fmt.Sprintf("PANIC=%v", err)
+		}
+	}()
+
+	return stringer.(fmt.Stringer).String()
+}
diff --git a/event/logging/ezap/zap_test.go b/event/logging/ezap/zap_test.go
new file mode 100644
index 0000000..20a22a1
--- /dev/null
+++ b/event/logging/ezap/zap_test.go
@@ -0,0 +1,39 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ezap
+
+import (
+	"context"
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+	"go.uber.org/zap"
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+	"golang.org/x/exp/event/logging/internal"
+)
+
+func Test(t *testing.T) {
+	e, h := internal.NewTestExporter()
+	ctx := event.WithExporter(context.Background(), e)
+	log := zap.New(NewCore(ctx), zap.Fields(zap.Int("traceID", 17), zap.String("resource", "R")))
+	log = log.Named("n/m")
+	log.Info("mess", zap.Float64("pi", 3.14))
+	want := &event.Event{
+		ID:      1,
+		Message: "mess",
+		Labels: []event.Label{
+			keys.Int64("traceID").Of(17),
+			keys.String("resource").Of("R"),
+			internal.LevelKey.Of(0),
+			internal.NameKey.Of("n/m"),
+			keys.Float64("pi").Of(3.14),
+		},
+	}
+	h.Got.At = want.At
+	if diff := cmp.Diff(want, &h.Got); diff != "" {
+		t.Errorf("mismatch (-want, +got):\n%s", diff)
+	}
+}
diff --git a/event/logging/internal/internal.go b/event/logging/internal/internal.go
new file mode 100644
index 0000000..e971215
--- /dev/null
+++ b/event/logging/internal/internal.go
@@ -0,0 +1,35 @@
+package internal
+
+import (
+	"context"
+	"time"
+
+	"golang.org/x/exp/event"
+	"golang.org/x/exp/event/keys"
+)
+
+var (
+	// TODO: these should be in event/keys.
+	LevelKey = keys.Int("level")
+	NameKey  = keys.String("name")
+	ErrorKey = keys.Value("error")
+)
+
+type TestHandler struct {
+	Got event.Event
+}
+
+func (h *TestHandler) Log(_ context.Context, ev *event.Event) {
+	h.Got = *ev
+	h.Got.Labels = make([]event.Label, len(ev.Labels))
+	copy(h.Got.Labels, ev.Labels)
+}
+
+var TestAt = time.Now()
+
+func NewTestExporter() (*event.Exporter, *TestHandler) {
+	te := &TestHandler{}
+	e := event.NewExporter(te)
+	e.Now = func() time.Time { return TestAt }
+	return e, te
+}
diff --git a/go.mod b/go.mod
index 6f4c758..79ff9d2 100644
--- a/go.mod
+++ b/go.mod
@@ -6,6 +6,9 @@
 	dmitri.shuralyov.com/gpu/mtl v0.0.0-20201218220906-28db891af037
 	github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802
 	github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4
+	github.com/go-kit/kit v0.10.0
+	github.com/go-logfmt/logfmt v0.5.0 // indirect
+	github.com/go-logr/logr v0.4.0
 	github.com/google/go-cmp v0.5.5
 	github.com/rs/zerolog v1.21.0
 	github.com/sirupsen/logrus v1.8.1
diff --git a/go.sum b/go.sum
index f073f79..cdfe453 100644
--- a/go.sum
+++ b/go.sum
@@ -1,56 +1,291 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20201218220906-28db891af037 h1:+PdD6GLKejR9DizMAKT5DpSAkKswvZrurk1/eEt9+pw=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20201218220906-28db891af037/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
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